Meta-analysis constraint-induced movement therapy (CIMT) versus control on arm motor function (ARAT). Effect of CIMT compared with usual care on arm motor function, assessed using Action Research Arm Test (ARAT) in adult stroke patients. The meta-analysis included 199 stroke patients. The black diamond does not cross the vertical line and showed an effect size of 7.78 (95% CI 1.19 to 14.37), which is significant (P = 0.02) using conventional meta-analytic methods. Heterogeneity expressed as I2 85% was high. Abbreviations: CIMT, Constraint induced movement therapy; ARAT, action research arm test.