Jonas Ranstam's website


A complete publications list can be downloaded here 🔗 and a Web of Science map here 🔗.

Selected method-oriented publications

  1.   Ranstam J. Systematic reviews, meta-analyses, randomized trials, and observational studies. Acta Orthopaedica 10 September 2021 🔗

  2.   Ranstam J. "There was no difference (p = 0.079)”. Acta Orthopaedica 23 April 2021 🔗

  3.   Ranstam J. Hypothesis-generating and confirmatory studies, Bonferroni correction, and pre-specification of trial endpoints. Acta Orthopaedica 14 May 2019 🔗

  4.   Ranstam J. Time to restrict the use of p-values. Acta Orthopaedica Published online: 26 Nov 2018 🔗

  5.   Ranstam J, Cook JA. LASSO regression. Br J Surg 2018;105:10.Sep 🔗

  6.   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 🔗

  7.   Ranstam J, Cook JA. Non-inferiority and equivalence trials. Br J Surg 2017;104:1578-1579 🔗

  8.   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 🔗

  9.   Ranstam J, Cook JA. Kaplan-Meier curve. Br J Surg 2017;104:442 🔗

10.   Cook JA, Ranstam J. Statistical models and confounding adjustment. Br J Surg 2017;104:786-787 🔗

11.   Cook JA, Ranstam J. Spurious findings. Br J Surg 2017;104:97 🔗

12.   Cook JA, Ranstam J. Overfitting. Br J Surg 2016;103:1814 🔗

13.   Ranstam J, Cook JA. Causal relationship and confounding in statistical models. Br J Surg 2016;103:1445-1446 🔗

14.   Cook JA, Ranstam J. Statistical analyses that provide an effect size are to be preferred. Br J Surg 2016;103:1365 🔗

15.   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 🔗

16.   Ranstam J, Cook JA, Collins GS. Clinical prediction models. Br J Surg 2016 Dec;103(13):1886. doi: 10.1002/bjs.10242 🔗

17.   Ranstam J, Cook JA. Statistical models: an overview. Br J Surg 2016;103:1047🔗

18.   Ranstam J. Multiple p-values and Bonferroni correction. Osteoarthritis Cartilage. 2016 Jan 21 🔗

19.   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 🔗

20.   Ranstam J. The importance of clear language. Acta Orthopaedica 2013;84(6) 🔗

21.   Ranstam J. Why the p-value culture is bad and confidence intervals a better alternative. Osteoarthritis and Cartilage 2012 April 11 🔗

22.   Ranstam J. Repeated measurements, bilateral observations and pseudoreplicates, why does it matter? Osteoarthritis and Cartilage 2012;20:473-475 🔗

23.   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) 🔗

24.   Ranstam et al. Statistical analysis of arthroplasty data. I. Introduction and background. Acta Orthopaedica 2011;82:253–257 🔗

25.   Ranstam et al. Statistical analysis of arthroplasty data. II. Guidelines. Acta Orthopaedica 2011;82:258–267 🔗

26.   Ranstam J, Lohmander LS. What’s in a number or in a picture? Osteoarthritis and Cartilage 2010;18:1003-1005 🔗

27.   Ranstam J, Robertsson O. Statistical analysis of arthroplasty register data. Acta Orthopaedica 2010;81:10-14 🔗

28.   Ranstam J. Sampling uncertainty in medical research. Osteoarthritis and Cartilage 2009;17:1416-1419 🔗

29.   Ranstam et al. Health-care quality registers: outcome-orientated ranking of hospitals is unreliable. Journal of Bone and Joint Surgery 2008;Br90:1558-1561 🔗

30.   Ranstam J. Accuracy, precision, and validity. Acta Radiologica 2008;49:105-106 🔗

31.   Ranstam J. Statistical significance. Acta Radiologica 2008;49:220-221 🔗

32.   Ranstam J. Analysis units. Acta Radiologica 2008;49:371-372 🔗

33.   Ranstam J. Patient number calculations. Acta Radiologica 2008;49:398-399 🔗

34.   Ranstam J. Negative results. Acta Radiologica 2008;49:521-522 🔗

35.   Ranstam J. Bias in observational studies. Acta Radiologica 2008;49:644-645 🔗

36.   Ranstam J. Adjusting results for confounding bias. Acta Radiologica 2008;49:769-770 🔗

37.   Ranstam J. Planning a randomized trial. Acta Radiologica 2008;49:893-894 🔗

38.   Ranstam J. Analyzing a randomized trial. Acta Radiologica 2008;49:1005-1006 🔗

39.   Ranstam J. Data handling, statistical computing, and archiving. Acta Radiologica 2008;49:1137-1139 🔗

40.   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 🔗

41.   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 🔗

42.   Ranstam J. P-values in research reports. Acta Orthopaedica 2005;76:290-290 🔗

43.   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 🔗

44.   Ranstam J. Problems in orthopedic research: dependent observations. Acta Orthop Scand 2003;73:447-450 🔗

45.   Ranstam J. Ryd L, Onsten I. Accurate accuracy assessment: review of basic principles. Acta Orthop Scand 1999;70:319-321 🔗

46.   Ranstam J. Repeated measurement and analysis units. Review of basic principles. Acta Orthop Scand 1998;69:345-346 🔗

47.   Ranstam J. A common misconception about p-values and its consequences. Acta Orthop Scand 1996;67:505-507 🔗

48.   Ranstam J. Statistics and medical research. Basic principles review. Acta Orthop Scand 1995;66:193-195 🔗