TABLE 4

The Effect of VAS at Vaccination Contacts on All-Cause Mortality During 6 Months of Follow-up by Season of Supplementation

Rate per 1000 PYRS# (Deaths/PYRS)Mortality Rate Ratio (95% Confidence Interval)aTest of Interaction Between VAS and Genderb
Vitamin APlacebo
Dry season
n = 1707n = 1712
 All22.6 (19/841)28.6 (24/839)0.79 (0.43–1.45)c
 Boys33.4 (14/419)9.5 (4/422)3.51 (1.16–10.7)d0.0005
 Girls11.8 (5/423)48.0 (20/417)0.25 (0.09–0.67)d
Rainy season
n = 2053n = 2067
 All18.9 (19/1004)17.8 (18/1011)1.06 (0.56–2.02)c
 Boys21.4 (11/514)17.5 (9/514)1.21 (0.50–2.93)d0.67
 Girls16.3 (8/490)18.1 (9/497)0.90 (0.35–2.34)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 = .52 for interaction between VAS and season.

  • d P = .02 for interaction among VAS, gender, and season.