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Table 4 Meta-regression analysis of 13 studies for exploration of the sources of heterogeneity

From: Meta-analysis on the effectiveness of team-based learning on medical education in China

Factors Coefficient Standard error 95% Confidence interval P
Quality score −0.02 0.50 −1.12-1.09 0.975
Student number 0.38 0.60 −1.15-1.91 0.550
Randomization −4.28 1.30 −7.61--0.95 0.021
Source of participants 2.69 0.98 0.16–5.21 0.041
Disciplines or curricula 1.08 1.31 −2.29-4.45 0.447
Gender 0.64 1.15 −2.31-3.58 0.602
Allocation concealment 1.18 1.85 −3.56-5.92 0.551
Control for important factors 0.39 1.38 −3.16-3.93 0.791
  1. Meta-regression analysis, given the multi-collinearity, the meta-regression models were built for quality scores and methodological quality factors, respectively; randomization was coded as no(0) or yes(1); source of participants was coded as medical college students(0) or undergraduate students(1)