Effect of Combination of Chinese Herbal Medicine versus Western Medicine on Mortality in Patients after Cardiopulmonary Resuscitation: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Figure 3

Methodological quality summary: review authors’ judgements about each methodological quality item for each included study. +: L (low risk of bias); ?: U (unclear risk of bias); −: H (high risk of bias).