Statistical analysis of arthroplasty data. II. Guidelines

Acta Orthop. 2011 Jun;82(3):258-67. doi: 10.3109/17453674.2011.588863.


It is envisaged that guidelines for statistical analysis and presentation of results will improve the quality and value of research. The Nordic Arthroplasty Register Association (NARA) has therefore developed guidelines for the statistical analysis of arthroplasty register data. The guidelines are divided into two parts, one with an introduction and a discussion of the background to the guidelines (Ranstam et al. 2011a, see pages x-y in this issue), and this one with a more technical statistical discussion on how specific problems can be handled. This second part contains (1) recommendations for the interpretation of methods used to calculate survival, (2) recommendations on howto deal with bilateral observations, and (3) a discussion of problems and pitfalls associated with analysis of factors that influence survival or comparisons between outcomes extracted from different hospitals.

Publication types

  • Comparative Study

MeSH terms

  • Arthroplasty, Replacement / standards
  • Arthroplasty, Replacement / statistics & numerical data*
  • Arthroplasty, Replacement, Hip / standards
  • Arthroplasty, Replacement, Hip / statistics & numerical data
  • Finland
  • Guidelines as Topic / standards*
  • Hip Prosthesis / standards
  • Humans
  • Outcome Assessment, Health Care / methods
  • Outcome Assessment, Health Care / standards
  • Outcome Assessment, Health Care / statistics & numerical data
  • Prosthesis Failure
  • Quality Assurance, Health Care
  • Registries / standards*
  • Reoperation
  • Scandinavian and Nordic Countries
  • Statistics as Topic* / methods
  • Statistics as Topic* / standards