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. 2020 Jul 26;2020(7):CD004345. doi: 10.1002/14651858.CD004345.pub3

Comparison 7. Surgical drain versus no drain.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
7.1 Pain at 24 hours (0‐to‐10 VAS) 2 180 Mean Difference (IV, Fixed, 95% CI) ‐0.19 [‐0.49, 0.12]
7.2 Swelling at 7 days 5 203 Mean Difference (IV, Random, 95% CI) ‐0.90 [‐1.62, ‐0.19]
7.3 Maximum mouth opening at 7 days 4 234 Mean Difference (IV, Random, 95% CI) 3.11 [2.20, 4.02]