J B Copas

Summary

Affiliation: University of Warwick
Country: UK

Publications

  1. ncbi request reprint Using regression models for prediction: shrinkage and regression to the mean
    J B Copas
    Department of Statistics, University of Warwick, Coventry, UK
    Stat Methods Med Res 6:167-83. 1997
  2. pmc Reanalysis of epidemiological evidence on lung cancer and passive smoking
    J B Copas
    Department of Statistics, University of Warwick, Coventry CV4 7AL
    BMJ 320:417-8. 2000
  3. ncbi request reprint A sensitivity analysis for publication bias in systematic reviews
    J B Copas
    Department of Statistics, University of Warwick, Coventry, UK
    Stat Methods Med Res 10:251-65. 2001

Collaborators

Detail Information

Publications3

  1. ncbi request reprint Using regression models for prediction: shrinkage and regression to the mean
    J B Copas
    Department of Statistics, University of Warwick, Coventry, UK
    Stat Methods Med Res 6:167-83. 1997
    ..Shrinkage is a particularly serious problem if the sample size is small and/or the number of covariates is large. Shrinkage of predictors is illustrated by two examples. A more general formulation is suggested...
  2. pmc Reanalysis of epidemiological evidence on lung cancer and passive smoking
    J B Copas
    Department of Statistics, University of Warwick, Coventry CV4 7AL
    BMJ 320:417-8. 2000
    ..To assess the epidemiological evidence for an increase in the risk of lung cancer resulting from exposure to environmental tobacco smoke...
  3. ncbi request reprint A sensitivity analysis for publication bias in systematic reviews
    J B Copas
    Department of Statistics, University of Warwick, Coventry, UK
    Stat Methods Med Res 10:251-65. 2001
    ..Publication bias leads to lower values, and greater uncertainty, in treatment effect estimates. Two examples are discussed. An appendix lists the S-plus code needed for carrying out the analysis...