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Table 2 Malondialdehyde concentration in relation to risk of obsessive-compulsive disorder by random effect model

From: Malondialdehyde concentrations in obsessive–compulsive disorder: a systematic review and meta-analysis

Malondialdehyde N studies SMD WMD 95% CI I2 (%) Ph
Different unit Overall   9 1.62   [0.53, 2.72] 96.9  < 0.001
Country Turkey 4 2.46   [2.18, 2.75] 96.9  < 0.001
Other 5 0.81   [0.55, 21.06] 95.6  < 0.001
Sample size ≤ 60 5 1.24   [0.93, 1.54] 95.6  < 0.001
> 60 4 1.73   [1.49, 1.97] 98.1  < 0.001
Same unit    5   1.93 [0.27, 3.59] 99.2  < 0.001
  1. Ph (P< 0.1 was considered as a significant difference), SMD Standardized Mean Difference, WMD weighted mean difference