Although we observed that parietal pleurectomy might increase the degree of postoperative pain in patients, this difference did not reach statistical significance due to the limited sample size and routine postoperative analgesia administration.
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A meta-analysis of efficacy and safety of parietal pleurectomy versus pleural abrasion in treating spontaneous pneumothorax.
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The sentences
Given the limited sample size in this study, the recurrence rate failed to reach statistical significance.