Predictors of successful closure following open-window thoracostomy in patients with empyema: a single-center retrospective cohort study.

Results of subgroup analysis A comparison of closure success rates between the tumor and infection groups revealed a consistent difference: ❖ Infection group: higher closure success rate (59%); ❖ Tumor group: lower closure success rate (35%); ❖ Chi-squared test results: the difference between the two groups did not reach statistical significance (P=0.11), likely due to sample size limitations and reduced statistical power.

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