Pooled measures for associations between UCP1-3826A/G, UCP2-866G/A, UCP2 Ala55Val, UCP2 Ins/Del and UCP3-55C/T polymorphisms and body mass index mean differences.

Sensitivity analysis was conducted to reduce heterogeneity by omitting studies if I2≥50%. Articles excluded after sensitivity analysis: Heilbron et al. [26]a;Esterbauer et al. [39]b,Hamada et al. [70]c and Otabe et al. [65]d.WMD = weighted mean difference.为降低异质性，本研究实施敏感性分析：当I2≥50%时剔除相关研究。经敏感性分析后剔除的文献包括：Heilbron等[26]a、Esterbauer等[39]b、Hamada等[70]c及Otabe等[65]d。WMD即加权均数差（weighted mean difference）。