Comparison of odds ratio in neutropenia. The summary of OR was calculated using the random effect model. Squares are ORs of neutropenia for separate trials. Horizontal lines through the squares represent 95% CIs. The diamond represents the overall OR of neutropenia from the meta-analysis and the corresponding 95% CIs. The studies that enrolled liposomal doxorubicin and conventional anthracyclines were separated into two groups for this analysis. Abbreviations: CI: Confidence interval; OR: Odd ratio.