TABLE 5

The effect of VAS at Vaccination Contacts on All-Cause Mortality During 6 Months of Follow-up by Previous Reception of Vitamin A

Rate per 1000 PYRS# (Deaths/PYRS)MRR (95% Confidence Interval)aTest of Interaction Between VAS and Genderb
Vitamin APlacebo
No previous VAS
n = 1726n = 1713
 All27.2 (23/845)27.5 (23/837)0.99 (0.57–1.77)
 Boys29.9 (13/435)25.0 (11/440)1.19 (0.53–2.65)c0.53
 Girls24.4 (10/410)30.2 (12/398)0.82 (0.35–1.89)c,d
Previous VAS
n = 2034n = 2066
 All15.0 (15/1000)18.8 (19/1012)0.80 (0.41–1.58)
 Boys24.1 (12/497)4.0 (2/496)5.98 (1.34–26.7)c0.0004
 Girls6.0 (3/503)33.0 (17/516)0.18 (0.05–0.62)c,d
  • #, person-years of observation.

  • a Analyzed by using Cox proportional-hazards models with age as underlying time scale.

  • b Tested using Wald test.

  • c P = .007 for interaction among VAS, gender, and previous VAS.

  • d P = .05 for interaction between VAS and previous VAS in girls.