Notes: PP, per-protocol; ITT, intention-to-treat; (95% CI), Hedge’s and 95% confidence intervals; Q (p), heterogeneity statistic and alpha value; (95% CI), percent inconsistency and 95% confidence interval; —, insufficient data to calculate; *statistically significant within-group difference because 95% confidence intervals do not include 0; **statistically significant heterogeneity (p ≤ 0.10).