Jonas Ranstam's website


A list of selected methods-oriented publications is presented below. A complete, updated, publications list can be downloaded here.

A Web of Science citation map can be downloaded here.

  1. Ranstam J. "There was no difference (p = 0.079)”. Acta Orthopaedica 23 April 2021.
  2. Ranstam J. Hypothesis-generating and confirmatory studies, Bonferroni correction, and pre-specification of trial endpoints. Acta Orthopaedica 14 May 2019
  3. Ranstam J. Time to restrict the use of p-values. Acta Orthopaedica Published online: 26 Nov 2018
  4. Ranstam J, Cook JA. LASSO regression. Br J Surg 2018;105:10.Sep
  5. Turkiewicz A, Luta G, Hughes HV, Ranstam J. Statistical mistakes and how to avoid them – lessons learned from the reproducibility crisis. Osteoarthritis and cartilage 2018, Aug
  6. Ranstam J, Cook JA. Non-inferiority and equivalence trials. Br J Surg 2017;104:1578-1579
  7. Ranstam J, Robertsson O. The Cox model is better than the Fine and Gray model when estimating relative revision risks from arthroplasty register data. Acta Orthop 2017 03 Aug
  8. Ranstam J, Cook JA. Kaplan-Meier curve. Br J Surg 2017;104:442
  9. Cook JA, Ranstam J. Statistical models and confounding adjustment. Br J Surg 2017;104:786-787
  10. Cook JA, Ranstam J. Spurious findings. Br J Surg 2017;104:97
  11. Cook JA, Ranstam J. Overfitting. Br J Surg 2016;103:1814
  12. Ranstam J, Cook JA. Causal relationship and confounding in statistical models. Br J Surg 2016;103:1445-1446
  13. Cook JA, Ranstam J. Statistical analyses that provide an effect size are to be preferred. Br J Surg 2016;103:1365
  14. Ranstam J, Cook JA. Considerations for the design, analysis and presentation of in vivo studies. Osteoarthritis Cartilage 2016 Jul 30. pii: S1063-4584(16)30191-1
  15. Ranstam J, Cook JA, Collins GS. Clinical prediction models. Br J Surg 2016;103;1886-1886
  16. Ranstam J, Cook JA. Statistical models: an overview. Br J Surg 2016;103:1047
  17. Ranstam J. Multiple p-values and Bonferroni correction. Osteoarthritis Cartilage. 2016 Jan 21
  18. Losina E, Ranstam J, Collins J, Katz JN. Key analytic considerations in design and analysis of randomized controlled trials in osteoarthritis. Osteoarthritis Cartilage 2015;23:674–676
  19. Ranstam J. The importance of clear language. Acta Orthopaedica 2013;84(6)
  20. Ranstam J. Why the p-value culture is bad and confidence intervals a better alternative. Osteoarthritis and Cartilage 2012 April 11
  21. Ranstam J. Repeated measurements, bilateral observations and pseudoreplicates, why does it matter? Osteoarthritis and Cartilage 2012;20:473-475
  22. Ranstam et al. Alternative analyses for handling incomplete follow-up in the intention-to-treat analysis: the randomized controlled trial of balloon kyphoplasty versus non-surgical care for vertebral compression fracture (FREE). BMC Medical Research Methodology 2012,12:35 (24 March 2012)
  23. Ranstam et al. Statistical analysis of arthroplasty data. I. Introduction and background. Acta Orthopaedica 2011;82:253–257
  24. Ranstam et al. Statistical analysis of arthroplasty data. II. Guidelines. Acta Orthopaedica 2011;82:258–267
  25. Ranstam J, Lohmander LS. What’s in a number or in a picture? Osteoarthritis and Cartilage 2010;18:1003-1005
  26. Ranstam J, Robertsson O. Statistical analysis of arthroplasty register data. Acta Orthopaedica 2010;81:10-14
  27. Ranstam J. Sampling uncertainty in medical research. Osteoarthritis and Cartilage 2009;17:1416-1419
  28. Ranstam et al. Health-care quality registers: outcome-orientated ranking of hospitals is unreliable. Journal of Bone and Joint Surgery 2008;Br90:1558-1561
  29. Ranstam J. Accuracy, precision, and validity. Acta Radiologica 2008;49:105-106
  30. Ranstam J. Statistical significance. Acta Radiologica 2008;49:220-221
  31. Ranstam J. Analysis units. Acta Radiologica 2008;49:371-372
  32. Ranstam J. Patient number calculations. Acta Radiologica 2008;49:398-399
  33. Ranstam J. Negative results. Acta Radiologica 2008;49:521-522
  34. Ranstam J. Bias in observational studies. Acta Radiologica 2008;49:644-645
  35. Ranstam J. Adjusting results for confounding bias. Acta Radiologica 2008;49:769-770
  36. Ranstam J. Planning a randomized trial. Acta Radiologica 2008;49:893-894
  37. Ranstam J. Analyzing a randomized trial. Acta Radiologica 2008;49:1005-1006
  38. Ranstam J. Data handling, statistical computing, and archiving. Acta Radiologica 2008;49:1137-1139
  39. Robertsson O, Ranstam J, Lidgren L. Variation in outcome and ranking of hospitals: an analysis from the Swedish knee arthroplasty register. Acta Orthopaedica 2006;77:487-493
  40. Robertsson O, Ranstam J. No bias of ignored bilaterality when analysing the revision risk of knee prostheses: analysis of a population based sample of 44,590 patients with 55,298 knee prostheses from the national Swedish Knee Arthroplasty Register. BMC Musculoskeletal Disorders 2003;4:1 Feb
  41. Ranstam J. P-values in research reports. Acta Orthopaedica 2005;76:290-290
  42. Ranstam J, Buyse M, George SL, Evans S, Geller NL, Scherrer B, Lesaffre E, Murray G, Edler L, Hutton JL, Colton T and Lachenbruch P. Fraud in medical research: an international survey of biostatisticians. ISCB Subcommittee on Fraud. Control Clin Trials 2000;21:415-427
  43. Ranstam J. Problems in orthopedic research: dependent observations. Acta Orthop Scand 2003;73:447-450
  44. Ranstam J. Ryd L, Onsten I. Accurate accuracy assessment: review of basic principles. Acta Orthop Scand 1999;70:319-321
  45. Ranstam J. Repeated measurement and analysis units. Review of basic principles. Acta Orthop Scand 1998;69:345-346
  46. Ranstam J. A common misconception about p-values and its consequences. Acta Orthop Scand 1996;67:505-507
  47. Ranstam J. Statistics and medical research. Basic principles review. Acta Orthop Scand 1995;66:193-195