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. 2015 Oct 27;2015(10):CD008666. doi: 10.1002/14651858.CD008666.pub3

Comparison 5. Vitamin A alone versus micronutrient supplement without vitamin A (subgroups).

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Maternal mortality (infant mortality level) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
1.1 Countries with low infant mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
1.2 Countries with high infant mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
2 Perinatal mortality (infant mortality level) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
2.1 Countries with low infant mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
2.2 Countries with high infant mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
3 Maternal mortality (maternal mortality level) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
3.1 Countries with low maternal mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
3.2 Countries with high maternal mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
4 Perinatal mortality (maternal mortality level) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
4.1 Countries with low maternal mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
4.2 Countries with high maternal mortality 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
5 Maternal mortality (prevalence of vitamin A deficiency) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
5.1 Low prevalence of vitamin A deficiency 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
5.2 High prevalence of vitamin A deficiency 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
6 Perinatal mortality (prevalence of vitamin A deficiency) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
6.1 Low prevalence of vitamin A deficiency 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
6.2 High prevalence of vitamin A deficiency 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
7 Maternal mortality (prevalence of HIV in the general population) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
7.1 Countries with low HIV prevalence 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
7.2 Countries with high HIV prevalence 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
8 Perinatal mortality (prevalence of HIV in the general population) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
8.1 Countries with low HIV prevalence 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
8.2 Countries with high HIV prevalence 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
9 Maternal mortality (dose) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
9.1 Daily 10,000 IU 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
9.2 Others 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
10 Perinatal mortality (dose) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
10.1 Daily 10,000 IU 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
10.2 Others 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
11 Maternal mortality (regimen) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
11.1 Daily 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
11.2 Weekly 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
11.3 Other regimen 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
12 Perinatal mortality (regimen) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
12.1 Daily 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
12.2 Weekly 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
12.3 Other regimen 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
13 Maternal mortality (duration of intervention) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
14 Perinatal mortality (duration of intervention) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15 Maternal mortality (trimester of pregnancy) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15.1 Pre‐pregnancy 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15.2 First trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15.3 Second trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15.4 Third trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
15.5 Mixed 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16 Perinatal mortality (trimester of pregnancy) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16.1 Pre‐pregnancy 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16.2 First trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16.3 Second trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16.4 Third trimester 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
16.5 Mixed 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
17 Maternal mortality (randomisation) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
17.1 Cluster‐randomised 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
17.2 Individual‐randomised 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
18 Perinatal mortality (randomisation) 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
18.1 Cluster‐randomised 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
18.2 Individual‐randomised 0 0 Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]