Table 1

Epidemiological characteristics of the two study populations

GhanaBrazil
Number of children18771209
Person years14551104
Age range at baseline (months)0–596–48
Diarrhoea
 Incidence rate/PY9.07.0
 Longitudinal prevalence17%5%
 Mean duration of episodes (days)6.12.7
Mean WAZ by age at measurement
 0–12 months−1.56−0.51
 >12–24 months−1.86−0.89
 >24–36 months−1.70−0.81
 >36–48 months−1.57−0.84
 >48–60 months−1.63−0.89
 0–60 months−1.67−0.83
WAZ <−230%13%
Mean HAZ−2.39−1.30
HAZ <−262%25%
Mortality
 Deaths (n)774
 Mortality rate/1000 PY52.93.6
  • PY, person years of observation; WAZ/HAZ, weight/height-for age z-score.