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Table 3 Logistic regression of use of any clustering analysis by predictors (N = 186)

From: Use of clustering analysis in randomized controlled trials in orthopaedic surgery

  OR 95% CI (Pvalue)
Any specialist(119) 6.4 0.8-50.0 (0.08)
Both specialists(119) 2.0 0.8-4.6 (0.13)
Biostatistician(126) 1.5 0.6-3.9 (0.39)
Epidemiologist/Methodologist(119) 3.6 1.2-11.4 (0.03)
Sample size(185) 1.0 1.0-1.0 (0.04)
Journal(186) 1.2 0.9-1.6 (0.25)
Impact factor(186) 1.4 0.8-2.6 (0.23)
Outcome(186) 1.0 0.5-1.9 (0.98)
Outcome2*(186) 1.0 0.7-1.6 (0.93)
  1. *Outcome 2 separates positive outcomes into those that specified the null hypothesis and those that did not.