Trials | Year | Expected observed | Expected total | Controls observed | Controls total | ERR (95% CI) | ERD (95% CI) | NNT(95% CI) |
---|---|---|---|---|---|---|---|---|
Durandet al 34 | 1995 | 2 | 21 | 8 | 17 | 0.20 (0.04, 0.95) | −37.54 (−64.38, −10.69) | |
Brozanskiet al 35 | 1995 | 24 | 40 | 30 | 37 | 0.74 (0.43, 1.27) | −21.08 (−40.83, −1.34) | |
Yeh et al 38 | 1994 | 3 | 47 | 11 | 47 | 0.27 (0.08, 0.98) | −17.02 (−31.00, −3.04) | |
Shinwellet al 31 | 1996 | 15 | 132 | 11 | 116 | 1.20 (0.55, 2.61) | 1.88 (−5.72, 9.48) | |
Rastogiet al 30 | 1996 | 0 | 32 | 6 | 32 | 0.08 (0.00, 1.49) | −17.19 (−31.38, −3.00) | |
Sanderet al 32 | 1994 | 4 | 17 | 5 | 14 | 0.66 (0.18, 2.45) | −12.18 (−44.38, 20.01) | |
Tapia et al 39 | 1996 | 3 | 55 | 12 | 54 | 0.25 (0.07, 0.87) | −16.77 (−29.38, −4.16) | |
Pooled [χ2=11.05 (df=6)] | 51 | 344 | 83 | 317 | 0.57 (0.44, 0.76) | − 9.41 (−14.50, −4.32) | 10 (6, 23) |