Table 3.
Individual odds ratios (and 95 % CI) and relative weights (by inverse of the variance) under fixed and random effects models
| Study | Year | OR | 95 % CI | Fixed effects | Random effects |
|---|---|---|---|---|---|
| Söderström-Anttila | 1998 | 6.09 | 2.58–14.39 | 5.9 | 8.7 |
| Wiggins | 2005 | 3.27 | 0.63–17.07 | 1.6 | 2.7 |
| Krieg | 2007 | 1.5 | 0.47–3.43 | 4.4 | 6.8 |
| Klatsky | 2010 | 3.9 | 1.22–12.58 | 3.2 | 5.2 |
| Le Ray | 2012 | 2.14 | 0.68–6.72 | 3.4 | 5.4 |
| Stoop | 2012 | 1.96 | 0.97–3.96 | 8.8 | 11.8 |
| Malchau | 2013 | 3.76 | 2.82–5.03 | 52.1 | 30.8 |
| Tranquilli | 2013 | 26.86 | 1.4–507.19 | 0.5 | 0.9 |
| Levron | 2014 | 2.06 | 0.76–5.6 | 4.4 | 6.8 |
| Sekhon | 2014 | 2.8 | 1.05–7.47 | 4.6 | 7 |
| Van Dorp | 2014 | 2.04 | 1.09–3.82 | 11.1 | 13.9 |