Fig. 4
From: Risk factors of postoperative delirium after cardiac surgery: a meta-analysis
Sensitivity analysis and funnel plot of analyses containing more than 4 studies. a Sensitivity analysis for age increase per year. b Funnel plot for age increase per year. c Sensitivity analysis for diabetes. d Funnel plot for diabetes. e Sensitivity analysis for hypertension. f Funnel plot for hypertension. g Forest plot of hypertension as risk factor after excluding the study that had major impact to pooled result. h Sensitivity analysis for hypertension after excluding the study that had major impact to pooled result. i Funnel plot for hypertension after excluding the study that had major impact to pooled result