Quality Assessment | Directness | Summary of findings | ||||
---|---|---|---|---|---|---|
No. of studies (Ref) | Design | Limitations | Consistency | Generalizability to Population of Interest | Generalizability to intervention of Interest | Relative Risk ( 95 % CI) |
Stillbirth: Low outcome specific quality | ||||||
13 | RCT | Methods of sequence generation and allocation concealment were not explicitly described in few of the studies | Heterogeneity in the pooled data was not significant (I2=38%) | All included studies from developing countries | Nine studies used UNIMMAP formulation (30 mg iron, 400 µg folic acid, 15 mg zinc, 2 mg copper, 65 µg selenium, 800 µg RE vitamin A, 1.4 mg vitamin B1, 1.4 mg vitamin B2, 18 mg niacin, 1.9 mg vitamin B6, 2.6 µg vitamin B12, 70 mg vitamin C, 5 µg vitamin D, 10 mg vitamin E and 150 µg iodine) | 0.98 (0.88-1.10)a |
Peri-natal mortality: Low outcome specific quality | ||||||
11 | RCT | Methods of sequence generation and allocation concealment were not explicitly described in few of the studies | Significant heterogeneity (I2=56%). Random models used | All included studies from developing countries | Nine studies used UNIMMAP formulation (30 mg iron, 400 µg folic acid, 15 mg zinc, 2 mg copper, 65 µg selenium, 800 µg RE vitamin A, 1.4 mg vitamin B1, 1.4 mg vitamin B2, 18 mg niacin, 1.9 mg vitamin B6, 2.6 µg vitamin B12, 70 mg vitamin C, 5 µg vitamin D, 10 mg vitamin E and 150 µg iodine) | 1.07 (0.92 –1.25)a |