| Study omitted | OR (95% CI) for remainders | Heterogeneity |
|
Valsecchi and Pigatto, 1998 [14] | 1.62 [1.07, 2.47] | , | Daudén et al., 2000 [16] | 1.77 [1.19, 2.64] | , | Hizal et al., 2000 [15] | 1.65 [1.09, 2.48] | , | Höök-Nikanne et al., 2000 [17] | 1.80 [1.30, 2.49] | , | Hidvégi et al., 2001 [18] | 1.69 [1.12, 2.56] | , | Fukuda et al., 2004 [19] | 1.72 [1.12, 2.64] | , | Moreira et al., 2004 [20] | 1.56 [1.05, 2.33] | , | Mete et al., 2004 [21] | 1.60 [1.07, 2.40] | , | Liutu et al., 2004 [22] | 1.56 [1.06, 2.32] | , | Galadari and Sheriff, 2006 [23] | 1.50 [1.04, 2.17] | , | Sianturi et al., 2007 [24] | 1.63 [1.10, 2.42] | , | Yadav et al., 2008 [8] | 1.72 [1.12, 2.64] | , | Abdou et al., 2009 [9] | 1.65 [1.10, 2.48] | , | Sadighha et al., 2009 [25] | 1.61 [1.07, 2.44] | , | Kołacińska-Flont et al., 2012 [26] | 1.74 [1.14, 2.65] | , | Sun et al., 2014 [27] | 1.70 [1.11, 2.62] | , |
|
|