Table 2.
Pre-post comparison cumulative incidence of drowning by treatment category
| Variables | Baseline Period (2012–2013) | Post Implementation Period (2014–2016) | Pre-post comparison | |||||
|---|---|---|---|---|---|---|---|---|
| Population (N = 48,561) n (%) |
Drowninga (N = 78) n (%) |
Age-adjusted cumulative incidence per 100,000 population per year (95% CI) | Population (N = 122,032) n (%) |
Drowningb (N = 105) n (%) |
Age-adjusted cumulative incidence per 100,000 population per year (95% CI) | Cumulative incidence ratioc (95% CI) | P-value | |
| Treatment categoryd | ||||||||
| Playpen only (aged 9–35 months) | 1150 (2.36) | 0 (0) | 0 | 5981 (4.90) | 22 (20.95) | 183.92 (121.15, 279.03) | 0 | 0 |
| Crèche only (aged 9–47 months) | 37,769 (77.78) | 78 (100) | 206.10 (138.70, 318.00) | 70,594 (57.85) | 66 (62.86) | 46.15 (28.86, 74.34) | 0.12 (0.05, 0.29) | < 0.0001 |
| Dual treatment (aged 9–47 months) | 8592 (17.69) | 0 (0) | 0 | 39,479 (32.35) | 8 (7.62) | 10.13 (5.07, 20.30) | 0 | 0 |
aDrowning information obtained over 1-year recall period
bDrowning information obtained over an average 2-year implementation period
cCumulative incidence ratios was adjusted for sex, age, and study area using Poisson regression model with Generalized Estimating Equations (GEE)
dChildren aged 0–8 months were not assigned to any intervention under the treatment arm