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Table 4 Logistic regression of use of clustering analysis for multiple centers by predictors (N = 87)

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

  OR 95% CI (Pvalue)
Any specialist(64) 2.3 0.2-20.7 (0.47)
Both specialists(58) 1.4 0.4-4.7 (0.60)
Biostatistician(64) 1.8 0.5-7.9 (0.35)
Epidemiologist/Methodologist(58) 1.1 0.3-4.9 (0.87)
Sample size(86) 1.0 1.0-1.0 (0.94)
Journal(87) 1.4 1.0-2.0 (0.07)
Impact factor(87) 1.4 0.6-2.9 (0.41)
Outcome(87) 1.3 0.6-3.0 (0.51)
Outcome2(87) 1.3 0.7-2.4 (0.38)