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Table 3 Mortality after 12 months of follow-up comparing a lower dose of vitamin A with the recommended dose among subgroups

From: The impact of different doses of vitamin A supplementation on male and female mortality. A randomised trial from Guinea-Bissau

 

Number of deaths/years at risk

Mortality Rate Ratio1 (95% CI)

(Low dose vs. Recommended dose)

 

Low dose

Recommended dose

   
 

All

(n = 8582)

All

(n = 8582)

Boys

(n = 4369)

Girls

(n = 4213)

Age groups

6-11 months

7/397

11/327

0.54 (0.21-1.38)

0.39 (0.07-2.11)

0.63 (0.20-1.99)

12-17 months

7/316

4/301

1.65 (0.48-5.63)

1.34 (0.30-6.00)

2.73 (0.28-26)

18-60 months

25/2763

17/2823

1.50 (0.81-2.77)

1.97 (0.74-5.25)

1.22 (0.54-2.72)

P for same effect in age groups

  

0.17

0.27

0.46

VAS at birth

 

All

(n = 2295)

All

(n = 2295)

Boys

(n = 1182)

Girls

(n = 1113)

VAS at birth

5/308

3/260

1.30 (0.31-5.46)

0.89 (0.05-15)

1.50 (0.27-8.18)

Placebo at birth

2/289

6/251

0.29 (0.06-1.41)

0.79 (0.05-13)

0.18 (0.02-1.52)

P for same effect by VAS at birth

  

0.17

0.93

0.12

  1. 1 Adjusted for sex and age as a continuous variable.