Nicola G. "Nicky" Best is a statistician known for her work on the deviance information criterion in Bayesian inference[B][E] and as a developer of Bayesian inference using Gibbs sampling.[A][D] She is a former professor of biostatistics and epidemiology at Imperial College London and is currently a biostatistician for GlaxoSmithKline.
Best earned a master's degree in medical statistics from the University of Leicester in 1990 and then a PhD in biostatistics from the University of Cambridge, supervised by David Spiegelhalter. She joined the Imperial College faculty in 1996. She moved from Imperial to GlaxoSmithKline in 2014.
She was editor-in-chief of the Journal of the Royal Statistical Society, Series A (Statistics in Society), from 2001 to 2004.
Best won the Guy Medal in Bronze of the Royal Statistical Society in 2004. In 2018, she won the Bradford Hill Medal of the Royal Statistical Society "for her exquisite expositions of Bayesian methods through BUGS software, workshops, lectures, prior elicitations, textbooks and peer-review publications; and for substantive applications ranging from clinical trials and cost-effectiveness to epidemiology and, most recently, the optimization of pharmaceutical research programmes". She was the 2025 recipient of the Greenfield Industrial Medal of the Royal Statistical Society for her work "co-developing the WinBUGS software and leading methodological innovation and data science solutions to improve the efficiency of clinical trials".
| A. | David J. Lunn; Andrew Thomas; Best, Nicola Grace; Spiegelhalter, David John (2000), "WinBUGS - A Bayesian modelling framework: Concepts, structure, and extensibility", Statistics and Computing, 10 (4): 325–337, doi:10.1023/a:1008929526011, Wikidata Q108929102 {{Cite Q}}: Missing first/last names in Wikidata for David J. Lunn |
| B. | Spiegelhalter, David John; Best, Nicola Grace; Carlin, Bradley; Angelika van der Linde (2002), "Bayesian measures of model complexity and fit", Journal of the Royal Statistical Society Series B: Statistical Methodology, 64 (4): 583–639, doi:10.1111/1467-9868.00353, Zbl 1067.62010, Wikidata Q56532420 {{Cite Q}}: Missing first/last names in Wikidata for Angelika van der Linde |
| C. | Plummer, Martyn; Best, Nicola Grace; Kate Cowles; Karen Vines (2006), "CODA: convergence diagnosis and output analysis for MCMC", Rnews, 6 (1): 7, Wikidata Q108929147 {{Cite Q}}: Missing first/last names in Wikidata for Kate Cowles, Karen Vines (help) |
| D. | Lunn, David Jonathan; Spiegelhalter, David John; Andrew Thomas; Best, Nicola Grace (2009), "The BUGS project: Evolution, critique and future directions", Statistics in Medicine, 28 (25): 3049–67, doi:10.1002/sim.3680, PMID 19630097, Wikidata Q28252857 {{Cite Q}}: Missing first/last names in Wikidata for Andrew Thomas (help) |
| E. | Spiegelhalter, David John; Best, Nicola Grace; Carlin, Bradley; Angelika van der Linde (2014), "The deviance information criterion: 12 years on", Journal of the Royal Statistical Society Series B: Statistical Methodology, 76 (3): 485–493, doi:10.1111/rssb.12062, Zbl 1411.62027, Wikidata Q108929214 {{Cite Q}}: Missing first/last names in Wikidata for Angelika van der Linde |