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Table 2 The effect of VAS/OPV at birth on infant mortality overall and by season of enrolment

From: Neonatal vitamin A supplementation associated with a cluster of deaths and poor early growth in a randomised trial among low-birth-weight boys of vitamin A versus oral polio vaccine at birth

 

Censored at 18 November 2008

With full follow up time

 

VAS

OPV

VAS vs. OPV

VAS

OPV

VAS vs. OPV

 

MR

MR

HR (95% CI)

MR

MR

HR (95% CI)

 

(Deaths/pyrs)

(Deaths/pyrs)

 

(Deaths/pyrs)

(Deaths/pyrs)

 

All

35.1

21.2

1.66 (0.68 – 4.02)

13.6

9.3

1.46 (0.65 - 3.29)

13/37

8/37

(14/103)

(10/108)

By season

     

Dry

15.8

28.9

0.54 (0.16 - 1.84)

11.9

23.3

0.53 (0.18 - 1.55)

4/25

7/24

(5/42)

(9/39)

Rainy

77.1

7.4

10.0 (1.24 – 80.5)

14.9

1.4

9.91 (1.23 - 79.8)

9/12

1/14

(9/61)

(1/69)

P for interaction

 

0.02

  

0.02

  1. MR per 100 years of follow up.
  2. Abbreviations: Pyrs person years of follow up.
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BMC Pediatrics

ISSN: 1471-2431

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