Nikolaos Demiris

Contact Details are in my web page: http://www.aueb.gr/users/nikos/

EDUCATION 

2000 - 2004:  PhD in Statistics, University of Nottingham, UK
Thesis title: “Bayesian Inference for Stochastic Epidemic Models using Markov chain Monte Carlo Methods”. 
Available online at: http://eprints.nottingham.ac.uk/10078/

1998 - 2000:  MSc  in  Statistics, Athens University of Economics and Business, Greece & Catholic University of Leuven, Belgium (Second Semester) 
Thesis title: “Monte Carlo Techniques in Pricing Financial Derivatives”

1991 - 1996  BSc in Mathematics, University of Patras, Greece

ACADEMIC WORK EXPERIENCE

Jan 2026 -                    Associate Professor, Athens University of Economics and Business, Athens, Greece
Jul 2016 - Dec 2025     Assistant Professor, Athens University of Economics and Business, Athens, Greece
Sep 2018 - Aug 2019   Senior Statistician, Department of Oncology, School of Clinical Medicine, University of Cambridge, UK
Jan 2012 -  Jun 2016     Lecturer, Athens University of Economics and Business, Athens, Greece
Jan 2009 -  Jan 2012     Lecturer, Agricultural University of Athens, Athens, Greece
Oct 2006 -  Dec 2008   Investigator Scientist, MRC Biostatistics Unit, Cambridge, UK
Dec 2003 - Sep 2006    Career Development Fellow, MRC Biostatistics Unit, Cambridge, UK

OTHER ACADEMIC ACTIVITIES

Jan 2025 -                 Visiting Senior Statistician, Department of Oncology, School of Clinical Medicine, University of Cambridge, UK

May 2009 -               Collaborator, WHO Collaborating Centre for Clinical Bacteriology, Parasitology, Zoonoses & Geographical Medicine, University of Crete, Greece

Sep 2019 - Oct 2024 Visiting Senior Statistician, Cambridge Cancer Trials Centre, Cambridge University Hospitals, Cambridge, UK

NON ACADEMIC WORK EXPERIENCE

1996 - 1998         During my (mandatory) military service I was engaged in meteorological observation and weather map issuing

PAPERS

70. A. Apsemidis and N. Demiris (2025) Stable Survival Extrapolation using Mortality Projections. Biometrics, 81(4), https://doi.org/10.1093/biomtc/ujaf159.

69. Pentland V., Thompson Z., Khoshbin A., Dayimu A., Demiris N., and Atrey A. On behalf of the WASP Group. (2025) Doctor, how long will my modern hip replacement last?” Survivorship of modern total hip arthroplasty to 30 years: systematic review, meta-analysis, and extrapolation of global joint registry data. Lancet, to appear.

68. A. Apsemidis and N. Demiris (2025) Bayesian evidence synthesis for modeling SARS-CoV-2 transmission. Journal of the Royal Statistical Society Series A, to appear https://doi.org/10.1093/jrsssa/qnaf177.

67. J A Krupka, I. Moutsopoulos, N. H Cutmore, C. S Trethewey, A. Dayimu, R. Goodhew, F. Kaji1, L. Raso-Barnett, H. Cheow, L. Elzubeir, J. Smith, A. Kamil, B. Ramona-Rita, J. Price, K. Elston, A. Kolodziejczyk, S.Tarantino, F. Mariscotti, P. Barry, S. Frost, N. Demiris, M. G Thomas, D Hassane, V. Munugalavadla, S. K. Nagumantry, M. J Karanth, M. Ahearne, N. Shah, C. P Fox, S. Anand and D. J Hodson (2025) Phased Variant-supported circulating tumor DNA as a prognostic biomarker after first-line treatment in Large B-Cell Lymphoma: findings from the DIRECT Study. Journal of Clinical Oncology, to appear https://doi.org/10.1200/JCO-25-01587.

66. E. M. Loizidoua, A. Simistiras, P. Barbounakis, S. Glentis, A. Dimopoulos, M. Anezaki, P. Rouskas, I. Kontoyiannis, N. Demiris, N. Scarmeas, M. Yannakoulia, K. Rouskas and A. S. Dimas (2025) Periodic restriction of animal products rapidly decreases cardiovascular disease risk and reduces low-grade inflammation: the FastBio study. Communications Medicine, to appear at https://doi.org/10.1038/s43856-025-01274-y and here is a comment in the Greek press.

65. L. Bouranis, N. Demiris, K. Kalogeropoulos and I. Ntzoufras (2025) Bayesian analysis of diffusion-driven multi-type epidemic models with application to COVID-19. Journal of the Royal Statistical Society Series A, freely available at https://doi.org/10.1093/jrsssa/qnaf130.

64. E. Koutsostathis, A. Psaroulaki, D. Chochlakis, C. Malesios, N. Demiris, K. Kalogeropoulos and A. Tsatsaris (2025) Association between Legionnaires' disease incidence and meteorological data by region and time in theisland of Crete, Greece. Water, 17(15), 2344; https://doi.org/10.3390/w17152344.

63. Daniells L. Jaki T. Dayimu A. Demiris N. Basu B. Symeonides S. and Mozgunov P. (2025) Seamless Monotherapy-Combination Phase I Dose-Escalation Model-Based Design. Clinical Trials, 22(4):430-441, freely available at https://doi.org/10.1177/17407745251350604

62. J. Abraham, L. O. O'Connor, L. Grybowicz, K. Pinilla, A. Dayimu, N. Demiris, C. Harvey, L. Drewett, R. Lucey, A. Fulton, A. Roberts, J. Worley, A. Chhabra, W. Qian. J. Brown, Hardy R, A-L. Vallier, S. Chan, M. Esther, U. Cidon, E. Sherwin, A. Chakrabarti, C. Sadler, J. Barnes, M. Persic, S. Smith, S. Raj, A. Borley, J. Braybrooke, E. Staples, L. Scott, C. Palmer, M. Moody, M. Churn, D. Pilger, G. Zagnoli-Vieira, P. Wijnhoven, M. Mukesh, R. Roylance, P. Schouten, N. Levitt, K. McAdam, A. Armstrong, E. Copson, E. McMurtry, S. Galbraith, M. Tischkowitz, E. Provenzano, M. O'Connor and H. Earl (2025) Neoadjuvant PARP inhibitor scheduling in BRCA1 and BRCA2 related breast cancer: PARTNER, a randomized phase II/III trial, Nature Communications 16:4269, freely available at https://doi.org/10.1038/s41467-025-59151-0 see also the BBC press release or the CUH  news.

61. A, Balakrishnan, P. Barmpounakis, N. Demiris, B. Andersson, A. Brañes, X. de Aretxabala, M. Sternby Eilard, P. Gibbs, S. J F Harper, E L Huguet, A. Jah, V. Kosmoliaptsis, J. Lendoire, S. S Liau, S. Maithel, J. L Martin, C. Noel, M Medi, R K Praseedom, A. Serrablo and V. Adsay (2025) Assessment of nodal staging and risk factors for nodal involvement in gallbladder cancer: retrospective study. Br. J Surgery Open, 9(3), freely available at https://doi.org/10.1093/bjsopen/zraf056.

60. P. Barmpounakis and N. Demiris (2025) Multiphasic stochastic epidemic models. Journal of the Royal Statistical Society Series C, 74(2), 491–505, freely available at https://doi.org/10.1093/jrsssc/qlae064. An AI-generated Podcast describing this work may be found here.

59. Engeli V, Roussos S, Demiris N, Hatzakis A and Sypsa V. (2025) Social contact patterns and age-mixing before and during the COVID-19 pandemic in Greece, January 2020–October 2021: insights on the impact of prolonged social distancing measures on transmission. Emerging Infectious Diseases 31(1), freely available at https://doi.org/10.3201/eid3101.240737.

58. Lightowlers S, Machin A, Woitek R, Provenzano E., Allajbeu I, Al Sarakbi W., Demiris N, Forouhi P, Gilbert F, Kirby A, Towns C, Somaiah N and Coles C. (2025) Neoadjuvant radiotherapy and endocrine therapy for ER positive breast cancers: the Neo-RT feasibility study. Clinical Oncology 37, 103669 https://doi.org/10.1016/j.clon.2024.103669.

57. Α. Chatzilena, N. Demiris and K. Kalogeropoulos (2024) A modelling framework for the analysis of the SARS-CoV2 transmission dynamics. Statistics in Medicine 43(23), 4542-4558, freely available at http://doi.org/10.1002/sim.10195.

56. Α. Dayimu, Ν. Simidjievski, N. Demiris and J. Abraham (2024) Sample size determination for prediction models via learning-type curves. Statistics in Medicine 43(16), 3062-3072, freely available at https://doi.org/10.1002/sim.10121.

55. J. Abraham, K. Pinilla, A. Dayimu, L. Grybowicz, N. Demiris, C. Harvey, L. Drewett, R. Lucey, A. Fulton, A. Roberts, J. Worley, A. Chhabra, W. Qian, A-L. Vallier, R. Hardy, S. Chan, T. Hickish, D. Tripathi, R. Venkitaraman, M. Persic, S. Aslam, D. Glassman, S. Raj, A. Borley, J. Braybrooke, S. Sutherland, E. Staples, L. Scott, M. Davies, C. Palmer, M Moody, M. Churn, J. Newby, M. Mukesh, A. Chakrabarti, R. Roylance, P. Schouten, N. Levitt, K. McAdam, A. Armstrong, E. Copson, E. McMurtry, M. Tischkowitz, E. Provenzano and H. Earl (2024) The PARTNER trial of neoadjuvant olaparib in triple-negative breast cancer, Nature 629 1142-1148 https://doi.org/10.1038/s41586-024-07384-2.

54. K. Andersen, E. Cutting, D. Apostolopoulos, A. Evans, L. Oakley, A. Dayimu, N. Demiris, K. Bongaerts, R. Staples, W. Gooding, D. Rubinsztein and R. Barker (2024) A trial to assess the tolerability of using felodipine to upregulate autophagy as a treatment of Huntington’s disease (FELL-HD): a Phase II, single centre, open label, dose finding trial protocol. BMJ Open, 14, e087983, freely available at https://doi.org/10.1136/bmjopen-2024-087983.

53. Α. Dayimu, N. Demiris, K. Lee, I. Cromwell, A. Heath and P. Pechlivanoglou (2024) Bayesian Hierarchical Models of Basket Trials in the Context of Economic Evaluation. Canadian Journal of Health Technologies, Vol. 4 Issue 5, freely available at https://doi.org/10.51731/cjht.2024.907.

52. I. Mehta, A. Dayimu, S. Kumar, C. Boobier, O. Oladipo D. Burke, A. Olson-Brown, P. Yesildag, J. Nobes, S. Brown, C. Booth, M. Wheater, D. Muller, V. Fountain, L. Ford, R. Board, L. McGurk, S. Twelves, N. Demiris and P. Corrie (2023) Comparison of 3-weekly and 6-weekly pembrolizumab UK prescribing practice for advanced and resected melanoma. European Journal of Cancer 194 113344 https://doi.org/10.1016/j.ejca.2023.113344

51. A. Balakrishnan, P. Barmpounakis, N. Demiris, A. Jah, H.V.M. Spiers, S. Talukder, J.L. Martin, P. Gibbs, S.J.F. Harper, E.L. Huguet, V. Kosmoliaptsis, S.S. Liau, R.K. Praseedom, B. Basu, X. de Aretxabala, J. Lendoire, S. Maithel, A. Branes, B. Andersson, A. Serrablo, V. Adsay, and the OMEGA Study Investigators (2023) Surgical outcomes of gallbladder cancer: the OMEGA retrospective, multicentre, international cohort study. The Lancet eClinical Medicine 59, 101951, freely available at https://doi.org/10.1016/j.eclinm.2023.101951.

50. A. Dayimu, L. Di Lisio, S. Anand, I. Roca-Carreras, W. Qian, A. Al-Mohammad, B. Basu, J. W. Valle, D. Jodrell, N. Demiris and P. Corrie (2023) Clinical and biological markers predictive of treatment response associated with metastatic pancreatic adenocarcinoma. British Journal of Cancer 128, 1672-1680, freely available at https://doi.org/10.1038/s41416-023-02170-9.

 49. P. Barmpounakis, N. Demiris I. Kontoyiannis, G.N. Pavlakis and V. Sypsa (2022) Evaluating the effects of second-dose vaccine-delay policies in European countries: A simulation study based on data from Greece. PLoS One 17(4): e0263977, freely available at https://doi.org/10.1371/journal.pone.0263977

48. M. Kondakis, N. Demiris I. Ntzoufras and N. Papanikolaou (2022) Inference and model determination for Temperature-Driven non-linear Ecological Models. Environmental and Ecological Statistics 29, 509-555 https://doi.org/10.1007/s10651-022-00531-w

47. N.A. Thompson, G.D. Stewart, S.J. Welsh, G.J. Doherty, M.J. Robinson, B.A. Neville, K. Vervier, S.R. Harris, D.J. Adams, K. Dalchau, D. Bruce, N. Demiris, T.D. Lawley and P.G. Corrie (2022) The MITRE trial protocol: a study to evaluate the microbiome as a biomarker of efficacy and toxicity in cancer patients receiving immune checkpoint inhibitor therapy BMC Cancer 22:99, freely available at https://doi.org/10.1186/s12885-021-09156-x

46. P. Pergantas, N. Papanikolaou, C. Malesios, A. Tsatsaris, M. Kondakis, I. Perganta, Y. Tselentis and N. Demiris, (2021) Towards a semi-automatic early warning system for vector-borne diseases. International Journal of Environmental Research and Public Health 18(4), 1823, freely available at https://doi.org/10.3390/ijerph18041823

45. P. Mlcochova, D. Collier, A. Ritchie, S. M. Assennato, M. Hosmillo, N. Goel, B. Meng, K. Chatterjee, V. Mendoza, N. Temperton, L. Kiss, L. C. James, K. A. Ciazynska, X. Xiong, J. A.G. Briggs, J. A. Nathan, F. Mescia, L. Bergamaschi, H. Zhang, P. Barmpounakis, N. Demiris, R. Skells, P. A. Lyons, J. Bradley, S. Baker, J. P. Allain, K. G.C. Smith, R. Bousfield, M. Wilson, D. Sparkes, G. Amoroso, E.Gkrania-Klotsas, S. Hardwick, A. Boyle, I. Goodfellow and Gupta RK (2020) Combined Point-of-Care Nucleic Acid and Antibody Testing for SARS-CoV-2 following Emergence of D614G Spike Variant. Cell Reports Medicine 1(6) 100099, freely available at https://doi.org/10.1016/j.xcrm.2020.100099

44. D. Collier, S. M. Assennato, B. Warne, N. Sithole, K. Sharrocks, A. Ritchie, P. Ravji, M. Routledge, D. Sparks,J. Skittrall, A. Smielewska, I. Ramsey, N. Goel, M. Curran, D. Enoch, R. Tassell, M. Lynham, D. Vagela, C. Leong, H.P. Mok, J. Bradley, K.G.C. Smith, V. Mendoza, N. Demiris, M. Besser, G. Dougan, P. Lehner, M.J. Siedner,  H. Zhang, C. Waddington, H. Lee and Gupta RK (2020) Point of care nucleic acid testing for SARS-CoV-2 in hospitalised patients: a clinical validation trial and implementation study. Cell Reports Medicine 1(5) 100062, freely available at https://doi.org/10.1016/j.xcrm.2020.100062

43. C. Malesios, M. Chatzipanagiotou, N. Demiris, A. Kantartzis, G. Chatzilazarou, S. Chatzinikolaou and P. Kostoulas (2020) A quantitative analysis of the spatial and temporal evolution patterns of the bluetongue virus outbreak in the island of Lesvos, Greece in 2014. Transboundary and Emerging Diseases 67:2073–2085, freely available at https://doi.org/10.1111/tbed.13553

42. E. Zoidis, A. Pappas, A. Al-Waeli, C. Georgiou, G. Danezis, N. Demiris, G. Zervas and K. Fegeros (2020) Effects of selenium and zinc supplementation on cadmium toxicity in broilers. Turkish Journal of Veterinary and Animal Sciences 44: 331-336.

41. A. Chatzilena, E. van Leeuwen, O. Ratmann, M. Baguelin and N. Demiris (2019) Contemporary statistical inference for infectious disease models using Stan. Epidemics 29, 100367, freely available at https://doi.org/10.1016/j.epidem.2019.100367

40. N.E. Papanikolaou, N.G. Kavallieratos, M. Kondakis, M.C. Boukouvala, E.P. Nika and N. Demiris (2019) Elucidating fitness components of the invasive dermestid beetle Trogoderma granarium combining deterministic and stochastic demography. PLoS One, 14(2): e0212182 freely available at https://doi.org/10.1371/journal.pone.0212182

39. A. T. Paraskevopoulou, E. Kamperi, N. Demiris, M. Economou, C. Theleritis, M. Kitsonas and C. Papageorgiou (2018) The impact of seasonal colour change in planting on patients with psychotic disorders using biosensors. Urban Forestry & Urban Greening 36: 50–56.

38. C. Malesios, N. Demiris, K Kalogeropoulos and I Ntzoufras, (2017) Bayesian epidemic models for spatially aggregated count data. Statistics in Medicine 36(20): 3216–3230.

37. P. Pergantas, A. Tsatsaris, C. Malesios, G. Kriparakou N. Demiris and Y. Tselentis, (2017) A spatial predictive model for malaria resurgence in Central Greece integrating entomological, environmental and social data. PLoS One, 12(6):e01788361 freely available at https://doi.org/10.1371/journal.pone.0178836.

36. P. Mbala, M. Baguelin, I. Ngay, A. Rosello, P. Mulembakani, N. Demiris, W. J. Edmunds, J.-J. Muyembe (2017) Evaluating the frequency of asymptomatic Ebolavirus infection. Philosophical Transactions of the Royal Society B, 372 (1721), 20160303.

35. C. Malesios, P. Kostoulas, K. Dadousis, and N. Demiris, (2017) An early warning indicator for monitoring infectious animal diseases. Stochastic Environmental Research and Risk Assessment, 31(2): 329–337.

34. N. E. Papanikolaou, N. Demiris, P. G. Milonas, S. Preston and T. Kypraios, (2016) Does Mutual Interference Affect the Feeding Rate of Aphidophagous Coccinellids? A Modeling Perspective. PLoS One, 11(1): e0146168 freely available at http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146168.

33. C. Malesios, N. Demiris, P. Kostoulas, K. Dadousis, T. Koutroumanidis and Z. Abas, (2016) Spatio-temporal Modeling of Foot-and-Mouth Outbreaks. Epidemiology and Infection, 144(12): 2485-2493.

32. N. E. Papanikolaou, H. Williams, N. Demiris, S. Preston, P. G. Milonas and T. Kypraios, (2016) Bayesian Inference and Model Choice for Holling's Disc Equation: A Case Study on an Insect Predator-Prey System. Community Ecology, 17(1): 71-78.

31. Demiris N, Lunn D, and Sharples L.D., (2015) Survival Extrapolation using the Poly-Weibull model. Statistical Methods in Medical Research, 24(2): 287-301, freely available at DOI.

30. G. Maniatis, N. Demiris, A. Kranis, G. Banos and A. Kominakis, (2015) Comparison of inference methods of genetic parameters with an application to body weight in Broilers. Archives Animal Breeding, 58: 277-286.

29. E. Zeki, N. Papanikolaou, N. Demiris and D. Kontodimas, (2015) Comparative demographic parameters and survival analysis of two phenotypes of Harmonia axyridis (Coleoptera: Coccinellidae). European Journal of Entomology, 192(1): 193-196.

28. Demiris N, Kypraios T, and Smith L.V., (2014) On the Epidemic of Financial Crises. Journal of the Royal Statistical Society Series A, 177(3): 697-723.

27. C. Malesios, N. Demiris, Z. Abas, K. Dadousis and T. Koutroumanidis, (2014) Modeling Sheep pox Disease from the 1994-1998 Epidemic in Evros Prefecture, Greece. Spatial and Spatio-temporal Epidemiology 11(2): 1-10.

26. G. Symeon, A. Athanasiou, N. Lykos, M.A. Charismiadou, M. Goliomytis, N. Demiris, A. Ayoutanti, P. Simitzis and S. Deligeorgis, (2014) The effects of dietary cinnamon (Cinnamomum zeylanicum) essential oil supplementation on broilers’ feeding behaviour, growth performance, carcass and meat characteristics. Annals of Animal Science, 14(4): 883–895.

25. N. Papanikolaou, P. Milonas, N. Demiris, D. Papachristos and Y. Matsinos, (2014) Digestion Limits the Functional Response of an Aphidophagous Coccinellid. Annals of the Entomological Society of America 107(2): 468-474.

24. E. Zoidis, N. Demiris, A. Kominakis and A.C. Pappas, (2014) Meta-analysis of selenium accumulation and expression of antioxidant enzymes in chicken tissues. Animal 8(4): 542-554.

23. N. Papanikolaou, P. Milonas, D. Kontodimas, N. Demiris and Y. Matsinos, (2014) Life Table Analysis of Propylea quatuordecimpunctata (Coleoptera: Coccinellidae) at Constant Temperatures. Annals of the Entomological Society of America 107(1): 158-162.

22. M. Baguelin, S. Flasche, A. Camacho, N. Demiris, E. Miller and W.J. Edmunds, (2013) Assessing optimal target populations for influenza vaccination programmes: an evidence synthesis and modeling study. PLoS Medicine 10(10): e1001527 freely available at http://www.plosmedicine.org/article/info:doi/10.1371/journal.pmed.1001527. 

21. Papa A, Sidira P, Kallia S, Ntouska M, Zotos N, Doumbali E, Maltezou HC, Demiris N and Tsatsaris A, (2013) Factors associated with IgG positivity to Crimean-Congo hemorrhagic fever virus in the area with the highest seroprevalence in Greece. Ticks and Tick-borne Diseases 4(5): 417-420.

20. N. Papanikolaou, P. Milonas, D. Kontodimas, N. Demiris and Y. Matsinos, (2013) Temperature-Dependent Development, Survival, Longevity and Fecundity of Propylea quatuordecimpunctata (Coleoptera: Coccinellidae). Annals of the Entomological Society of America 106(2): 228-234.

19. P. Simitzis, D. Veis, N. Demiris, M.A. Charismiadou, A. Ayoutanti and S. Deligeorgis, (2013) The effects of the light regimen imposed during lactation on the performance and behaviour of sows and their litters. Applied Animal Behaviour Science 144: 116– 120.

18. G. Maniatis, N. Demiris, A. Kranis, G. Banos and A. Kominakis, (2013) Model comparison and estimation of genetic parameters for body weight in commercial broilers. Canadian Journal of Animal Science 93(1)67-77.

17. A. Al-Waeli, E. Zoidis, A. C. Pappas, N. Demiris, G. Zervas and K. Fegeros, (2013) The role of organic selenium in cadmium toxicity: Effects on broiler performance and health status. Animal 7(3):386-393.

16. G. Maniatis, N. Demiris, A. Kranis, G. Banos and A. Kominakis, (2013) Genetic analysis of sexual dimorphism of body weight in broilers. Journal of Applied Genetics. 54(1):61-70.

15. P. Simitzis, M. Petrou, N. Demiris and S. Deligeorgis, (2012) Effect of pre-weaning temporary isolation within different age periods on the early post-weaning behaviour of juveline lambs. Applied Animal Behaviour Science, 141:43-48.

14. Kantzoura V, Kouam M.K, Demiris N, Feidas H, and Theodoropoulos G, (2011) Risk factors and geospatial modelling for the presence of Fasciola hepatica infection in sheep and goat farms in the Greek temperate Mediterranean environment. Parasitology. 138:926-938.

13. Wang Q, MA, Rogers C.A, Bonser R.S, Banner N.R, Demiris N, and Sharples L. D, (2011) Assessing the benefit of accepting a single lung offer now compared to waiting for a subsequent double lung offer. Transplantation. 91(8):921-926.

12. Pappas A.C, Zoidis E, Georgiou C.A, Demiris N, Surai P.F, and Fegeros K, (2011) Influence of organic selenium supplementation on the accumulation of toxic and essential trace elements involved in the antioxidant system of chicken. Food Additives and Contaminants: Part A. 28(4):446-454.

11. Baguelin M, Newton J.R, Demiris N, Daly J, Mumford J. A, and Wood J. L. N, (2010) Control of equine influenza: scenario testing using a realistic meta-population model of spread. Journal of the Royal Society Interface. 7:67-79.

10. Stoica, S., Goldsmith, K. A., Demiris, N., Punjabi, P., Berg, G., Sharples, L. D., and Large, S. (2010) Microsimulation and clinical outcomes analysis support a lower age threshold for use of biological valves. Heart. 96:1730-1736.

9. Symeon G, Zintilas C, Demiris N, Bizelis I, and Deligeorgis S. G, (2010) Effects of Oregano Essential Oil Dietary Supplementation on the Feeding and Drinking Behaviour as well as the Activity of Broilers. International Journal of Poultry Science. 9(4):401-405.

8. Goldsmith, K. A., Demiris, N., Gooi, J. H., Sharples, L. D., Jenkins, D. P., Dhital, K. K. and Tsui, S. S. L. (2009) Life-Years Gained by Reducing Donor Heart Ischemic Times. Transplantation. 87(2):243-248.

7. Sharples LD, Cafferty F, Demiris N, Freeman C, Dyer M, Banner N, Birks EJ, Khaghani A, Large SR, Tsui S, Caine N and Buxton M (2007), Evaluation of the Clinical Effectiveness of the Ventricular Assist Device Program in the United Kingdom (EVAD-UK). Journal of Heart and Lung Transplant (Vol. 26, Issue 1) pp. 9-15.
 
6. Sharples LD, Buxton M, Caine N, Cafferty F, Demiris N, Dyer M and Freeman C, (2006) Evaluation of the ventricular assist device programme in the UK, Health Technology Assessment; Vol 10: number 48, freely available at http://www.journalslibrary.nihr.ac.uk/hta/volume-10/issue-48

5. Sharples LD, Dyer M, Cafferty F, Demiris N, Freeman C, Banner NR, Large SR, Tsui S, Caine N, Buxton M (2006) Cost-effectiveness of Ventricular Assist Device Use in the United Kingdom: Results From the Evaluation of Ventricular Assist Device Programme in the UK (EVAD-UK). Journal of Heart and Lung Transplantation (Vol. 25, Issue 11) pp. 1336-1343.
 
4. Demiris N, and O’Neill P.D, (2006) Computation of final outcome probabilities for the generalised stochastic epidemic. Statistics and Computing 16, 309-317.
 
3. Demiris N, and Sharples L.D, (2006) Bayesian Evidence Synthesis to extrapolate Survival estimates in Cost-Effectiveness Studies. Statistics in Medicine 25(11), 1960-1975.
 
2. Demiris N, and O’Neill P.D, (2005) Bayesian Inference for Stochastic Multitype Epidemics in structured populations via random graphs. Journal of the Royal Statistical Society Series B 67, 731-745.
 
1. Demiris N, and O’Neill P.D, (2005) Bayesian Inference for Epidemics with two levels of mixing. The Scandinavian Journal of Statistics 32, 265-280.

Other Publications

Sharples and Demiris (2019) Survival analyses and censored data. A chapter in the book Bayesian Methods in Pharmaceutical Research, Edited by Lesaffre, Baio and Boulanger, CRC press, to appear.

Demiris (2009), Discussion on Rue et al, Journal of the Royal Statistical Society Series B 71, 319-392.

Kalogeropoulos, Demiris and Papaspiliopoulos (2008) Diffusion-driven models for Physiological Processes. In the edited volume of the International Workshop in Applied Probability (IWAP) 2008

Some Abstracts

Price, Mayrand, Wan, Cream, Cook, Dayimu, Jenkinson, Varma, Ashkan, Thomson, Smith, Demiris, Matys and Chao (2023) Predicting sites of tumor progression in the invasive margin of glioblastomas (Pram-GBM study): An Interim Analysis of a multi-center imaging biomarker study. Neuro-Oncology, 25, Suppl. 5, p. 198.


Corrie, Welsh, Stewart, Doherty, Vervier, Neville, Parkinson, Fife, Faust, Jayaprakash, Geldart, Brown,Wheater, Nobes, Bruce, Demiris, Dalchau, Adams, Robinson, and Lawley (2021) Identification of a microbiome signature predicting immune checkpoint inhibitoroutcomes across multiple cancer types in the MITRE study. Journal of Clinical Oncology 39:15_suppl, TPS2665-TPS2665

K. Heider, J. C Wan, D. Gale, A. Ruiz-Valdepenas, F. Mouliere, J. Morris, N. R Qureshi, W. Qian, J. Wulff, N. Demiris, K. Howarth, E. Green, V. Rundell, T. Eisen, W. Cooper, C. G Smith, C. Massie, S. Harden, D. M Rassl, R. C Rintoul, N. Rosenfeld (2020) ctDNA detection in early stage non-small cell lung cancer Cancer Research 80: 16_Supplement, 736-736

J Wulff, N Demiris (2019) Some practical considerations in the design of multi-arm multi-stage designs Trials Vol. 20


CITATIONS

A fast route to my citations is through Google scholar.

HONOURS/AWARDS
 
2005: Myrto Lefkopoulou Award from the Greek Statistical Institute for the best PhD thesis in the area of Biostatistics/Statistics among Greek students for the years 2003-2004.  

PEER-REVIEW

I am on the editorial board of PLoS Medicine (as a statistical advisor) since 2011.

I was on the editorial board of Journal of the Royal Statistical Society Series C (Jan 2020 - Dec 2023)

I was on the editorial board of Journal of the Royal Statistical Society Series A (Jan 2014 - Dec 2017)

I was on the inaugural editorial board of Statistical Communications in Infectious Diseases. I resigned on October 2012.

I have refereed papers for many journals including: Annals of Applied Statistics, Biometrics, Biometrika, Canadian Journal of Statistics, Circulation, Computational Statistics and Data Analysis, Journal of Biological Systems, Journal of Mathematical Biology, Journal of the American Statistical Association, Journal of the Royal Statistical Society Series A, B and C, Journal of Theoretical Biology, Mathematical Biosciences, Mathematical Medicine and Biology, PLoS Medicine, Proceedings of the Royal Society A, Statistical Methodology, Statistics and Computing and Statistics in Medicine.

RESEARCH SUPERVISION         

Post-Doc
Jan 2024 - Sep 2025 Supervisor of Petros Barbounakis, Athens University of Economics and Business post-doc.
May 2021 - April 2023 Supervisor of Labros Bouranis, Marie Curie Fellow, Athens University of Economics and Business, working on a project entitled Bernadette, "Bayesian inference and model selection for stochastic epidemics", see the Bernadette site for the details.
Sep 2018 - Aug 2019   Supervising 3 PhD level statisticians, Cambridge Cancer Trials Centre, Cambridge, UK.

PhD
Oct 2025 -                   Supervisor of PhD student Chrysoula Tsismetzoglou, Athens University of Economics and Business.
Oct 2024 -                   Supervisor of PhD student Andre Ehrlich, Athens University of Economics and Business.
Jan 2024 -                    Supervisor of PhD student Fotini Stroubakou, Athens University of Economics and Business.
Oct 2018 -                   Supervisor of PhD student Magda Rigkou, with Andreas Tsatsaris, University of west Attica.
Oct 2019 - May 2024  Supervisor of PhD student Tasos Apsemidis, Athens University of Economics and Business, thesis available here. First job post-PhD: Post-Doc at the University of Ioannina.
Oct 2018 - Sep 2023   Supervisor of PhD student Petros Barbounakis, Athens University of Economics and Business, thesis available here, supported by a PhD scholarship awarded by the Greek State Scholarship Foundation. Currently a Post-Doc at the University of Cambridge.
Nov 2017 - Oct 2021  Supervisor of PhD student Anastasia Chatzilena, Athens University of Economics and Business, thesis available here, supported by a PhD scholarship awarded by the Greek State Scholarship Foundation. First job post-PhD: Post-Doc at Bristol University
Oct 2017 - Nov 2021  Supervisor of PhD student Marios Kondakis, Athens University of Economics and Business, thesis available here.
Oct 2011 - Jan 2015    Supervisor of PhD student Valantis Malesios, Democritus University of Thrace. First job post-PhD: Marie Curie Fellow @ Aston University, UK, currently an associate prof at the Agricultural University of Athens.
May 2009 - Oct 2012  Co-Supervisor (with Antonis Kominakis) of PhD student Makis Maniatis, Agricultural University of Athens. First job post-PhD: @ the R&D of Aviagen Ltd, Edinburgh, UK.
Oct 2006 - Jul 2010     Co-Supervisor (with Linda Sharples) of PhD student Qing Wang, University of Cambridge. First job post-PhD: RA @ the University of Basel.

I've also been a member in a number of advisory committes for PhD, MSc and undergraduate students.

GRANTS

June 2025 - June 2026: Internal AUEB grant for "research excellence" on Sample size determination for prediction models via learning-type curves.
Apr 2023 - May 2024: Internal AUEB grant for "research excellence" on Inference and model determination for Temperature-Driven non-linear Ecological Models.
May 2021 - April 2023: EU grant to support Marie Curie Fellow Labros Bouranis (€ 165085)
Feb. 2019 - Dec. 2019: Internal AUEB grant supporting on-going research on "Contemporary statistical inference for infectious disease models".
Nov. 2017 - Dec. 2018: Internal AUEB grant supporting on-going research on "Flexible Stochastic Growth Models and their Experimental Design".
Nov. 2015 - Oct. 2017: Internal AUEB grant "Action 1: funding excellence and extroversion" supporting on-going research on "Computationally efficient methods for high dimensional regression".
May 2015 - Dec. 2016: Internal AUEB grant supporting on-going research on "predictive model selection for Bayesian Spatio-temporal models".
Jan. 2014 - Nov. 2015: Collaborator in a Greek Ministry of Education and Religious Affairs grant (€ 21800 to AUEB) from Action "Cooperation 2011" (grant no. 447919/11SYN_3_1087) on "Genomic Selection in sheep".
Feb. 2013 - Jan. 2015: Internal AUEB grant "Action 1: funding excellence and extroversion" supporting paper number 28 and some on-going research on extending this work.
2003-2008: While at the MRC-Biostatistics Unit I was under the Unit's "core funding" which covered travel expenses, computer equipment etc. Where possible I applied for additional funding, including a small monetary award for financial assistance to attend the 2006 Isaac Newton Institute Workshop on Stochastic Computation for the Analysis of Ecological and Epidemiological Data and a small award for partial financial assistance to attend the 2006 Valencia / ISBA 8th World Meeting on Bayesian Statistics.
2000: Three year Research Scholarship Award by the UK Engineering and Physical Sciences Research Council.

CONSULTING        

I consult regularly on Statistical, Trial Design and Epidemic-related aspects for various organisations including Cambridge Cancer Trials Centre, the Greek School of Public Health and Bioapplications Ltd.

TEACHING EXPERIENCE         

2012 -                  Department of Statistics, Athens University of Economics and Business
Teaching at undergraduate and postgraduate level, including courses on Biostatistics, Bayesian Modelling, Data Science in Medicine, Epidemic Models, Health Data Science, Survival Analysis and Epidemiology.
Also teaching Theory of Statistics to our 1st year PhD candidates.

2017 -                 Department of Medicine, University of Athens
Teaching the postgraduate course Survival Analysis, part of the MSc in Biostatistics

2009 - 2012         Department of Medicine, University of Crete
Teaching the postgraduate course Epidemic Models, part of the MSc in Infectious Diseases

2009 - 2012         Department of Animal Science, Agricultural University of Athens
Teaching the postgraduate course Biostatistics. Also involved in undergraduate teaching.

2004 - 2007         Department of Pure Mathematics and Mathematical Statistics, University of Cambridge
Supervisions (tutorials) for Principles of Statistics (3rd year), Statistical Modelling (3rd year) and Probability IA (1st year).
 
2000 - 2003    &nbsbr> Teaching the postgraduate course Survival Analysis, part of the MSc in Biostatistics

2009 - 2012         Department of Medicine, University of Crete
Teaching the postgraduate course Epidemic Models, part of the MSc in Infectious Diseases

2009 - 2012         Department of Animal Science, Agricultural University of Athens
Teaching the postgraduate course Biostatistics. Also involved in undergraduate teaching.

2004 - 2007         Department of Pure Mathematics and Mathematical Statistics, University of Cambridge
Supervisions (tutorials) for Principles of Statistics (3rd year), Statistical Modelling (3rd year) and Probability IA (1st year).
 
2000 - 2003         School of Mathematical Sciences, University of Nottingham
Demonstrating and marking for various first and second year Probability and Statistics modules including Probability Techniques, Statistical Concepts and Methods, Decision Making under Uncertainty and Linear Models.  

PUBLIC OUTREACH

Occasionally I give public lectures in Greek.
At https://www.blod.gr/lectures/i-pandimia-tis-zois-mas-apotimisi-kai-matia-sto-mellon/ is a lecture on assessing the pandemic
At https://www.blod.gr/lectures/epidimika-montela-koronoios/  is a web lecture on epidemic models at the time of coronavirus, also available here and at
http://www.blod.gr/lectures/Pages/viewlecture.aspx?LectureID=2392 is a lecture on the Mathematics of Epidemics.

At https://shows.acast.com/thalesandfriends/episodes/60d5fea28148f40012d83901 is a podcast on Predictions at the time of the pandemic.

I spoke on the inaugural Pint of Science Greece event.
Articles on (bio)statistics written for the popular press may be found here and here

SOCIETY MEMBERSHIP

I am a fellow of the Royal Statistical Society and the Greek Statistical Institute

SERVICE

Academic

2009-          Member of the Organising/Scientific Committee of Greek Stochastics
2025-          Statistician in the Independent Data Monitoring Committee of the Heidelberg-based RATIONALE clinical trial.
2023-          Organised a Workshop on Statistical Modelling of Epidemic Outbreaks as part of the Bernadette project.
2023-          Member of the Sterring Committee of the UK's Experimental Cancer Medicine Centres Junior Investigator Network Group
2011-          Member of the Committee in some of the IBS/EMR conferences
2005-2008: Seminar Organiser in the MRC Biostatistics Unit

I have been an external PhD examiner at University College London, University of Nottingham, National Technical University of Athens, Athens University of Economics and Business, National and Kapodistrian University of Athens, Agricultural University of Athens and Democritus University of Thrace

Admin

2012 -          Member in various committees at the Athens University of Economics and Business
2009 - 2012 Member in various committees at the Agricultural University of Athens

PRESENTATIONS

At Workshops and Conferences:

2nd Conference in Biostatistics & Health Analytics, July 2025, Aegina, Greece. 
Discussant of Chris Holmes's paper at O'Bayes 2025, June 2025.
Cancer Core Europe Annual Meeting, March 2025
Statistical Data Science Conference - Economic and Financial Impact of COVID-19, September 2023
AUEB Conference - Economic and Financial Impact of COVID-19, July 2023
Statistics5@Aegina, September 2019, Aegina, Greece
ISPOR 2018, November 2018, Barcelona, Spain. The presentation is available here.
JSM 2018, August 2018, Vancouver, Canada
Invited Talk at ISBIS 2018, July 2018, Piraeus, Greece
Poster presented at Bayes Comp 2018, March 2018, Barcelona, Spain.
Invited Talk at the 9th EMR-IBS Conference, May 2017, Thessaloniki, Greece.
UCL Workshop on Infectious Disease Modelling in Public Health Policy: Current status and challenges, July 2016, London, UK. A video of the talk is available here.
3rd meeting in Statistics, June 2015, Athens, Greece.
Poster presented at Greek Stochastics ζ, December 2014, Athens, Greece.
Workshop on Health GeoInformatics, December 2013, Athens, Greece.
10th Summer School in Stochastic Finance, July 2013, Athens, Greece.
Poster presented at the Bayesian methods in Biostatistics and Bioinformatics, December 2012, Barcelona, Spain.
InFER2011, March 2011, Warwick, UK.
Invited Mini-Course at Greek Stochastics β', August 2010, Lefkada, Greece.
Invited Discussant at the CFAP conference on Interconnections in Financial Markets, March 2010, Cambridge, UK.
7th World Congress in Probability and Statistics, July 2008, Singapore
28th ISCB, July 2007, Alexandroupolis, Greece.
XXIII International Biometric Conference, July 2006, Montreal, Canada.
Poster presented at the 8th Valencia International Meeting on Bayesian Statistics, June 2006, Benidorm, Spain.
25th European Meeting of Statisticians, July 2005, Oslo, Norway. 
Invited Talk at the ESI Meeting, May 2005, Rhodes, Greece. 
Young Statisticians Meeting 2005, Dublin, Ireland. 
Poster presented at the fourth Workshop on Bayesian Nonparametrics: Methodology, Theory and Applications, June 2004, Rome, Italy. 
ESI Meeting, April 2004, Lefkada, Greece. 
Poster presented at the Seventh Valencia International Meeting on Bayesian Statistics, June 2002, Tenerife, Spain.
Young Statisticians Meeting 2002, Edinburgh, UK. 
Invited Talk at the TMR Workshop on Computationally Intensive Statistical Methods, 9-11 December 2001, Lancaster, UK.
Bayesian Inference for Stochastic Epidemic Models, Research Students Conference 2001, Newcastle, UK.

At Universities, Research Centres etc (invited seminars):

Department of Mathematics, University of Crete, Heraklion, Greece. 15 Nov. 2023
Stockholm University, Stockholm, Sweeden, on 7 Nov. 2022
Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland. The abstract is here and the flyer is here.
Mapi Webinar, freely available here.
Statistics Section, Mathematics Department, Imperial College London, London, UK.
Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Department of Economics and Business, Universitat Pompeu Fabra, Barcelona, Spain.
Department of Mathematics, University of Athens, Athens, Greece.
Department of Economics and Business, Universitat Pompeu Fabra, Barcelona, Spain.
Department of Statistics, London School of Economics, London, UK.
Faculty of Business and Economics, Catholic University of Leuven, Leuven, Belgium.
School of Mathematical Science, University College Dublin, Dublin, Ireland.
Institute of Mathematics Statistics and Actuarial Science, University of Kent, Canterbury, UK.
School of Mathematics, University of Manchester, Manchester, UK.
School of Mathematical Sciences, University of Nottingham, Nottingham, UK.  
Cambridge Infectious Diseases Consortium, University of Cambridge, Cambridge, UK. 
Department of Mathematics and Statistics, University of Lancaster, Lancaster, UK.  
Health Protection Agency, London, UK.
 
Various internal presentations in the meetings of the Epidemics Group at the University of Nottingham, the MRC Biostatistics Unit, Cambridge and the Athens University of Economics and Business.

OTHER ACTIVITIES
 
Resident Tutor, Florence Boot Hall, University of Nottingham, 2000-2003
Member of the Basketball Team, University of Nottingham, 2000-2003.
 
Back to http://www.aueb.gr/users/nikos/