| Study |
Weight |
Odd. ratio |
lower |
Upper |
P-value |
| Bruce Shapiro, |
2.9 |
0.33 |
0.17 |
0.62 |
0.000 |
| Jigal Haas |
11.2 |
0.63 |
0.46 |
0.86 |
0.004 |
| V. Poulsen |
16.2 |
0.25 |
0.18 |
0.34 |
0.000 |
| Samer Tannus, |
5.5 |
1.09 |
0.71 |
1.66 |
0.700 |
| Lucile Ferreux |
41.5 |
2.21 |
1.62 |
3.01 |
0.000 |
| B S Shapiro |
22.7 |
0.81 |
0.66 |
1.00 |
0.055 |
| Total |
100 |
0.73 |
0.66 |
0.82 |
0.000 |