Sensitivity analysis
The sensitivity analysis of the eligible nine studies[22-30] is presented in Figure 3. The pooled incidence of the PTSD after traumatic childbirth ranged from 16.6% (95% CI: 9.9%~23.2%) to 21.2% (95% CI: 13.2% ~ 29.2%) when excluding one study at a time, and I² was between 91.7% and 94.6%.