Table 4.

Sensitivity analyses for the primary outcome perceived stress (post-intervention)

Sensitivity analysis	SMD (95% CI) random effects	I2 value
All studies (n = 11)	-0.41 (-0.53; -0.19)	63%
Low RoB – allocation concealment (n = 5)	-0.31 (-0.53; -0.09)	42%
Low RoB – blinding of outcome assessment (n = 5)	-0.43 (-0.76; -0.1)	75%
Low RoB – incomplete outcome data (n = 6)	-0.51 (-0.89; -0.13)	81%
Large sample size (≥ 100 participants) (n = 6)	-0.26 (-0.45; -0.06)	51%
Clearly predefined primary outcome measure (n = 4)	-0.54 (-1.01; -0.07)	70%

Abbreviations: RoB Risk of bias, SMD Standardized mean difference