Table 3.
Diarrhoea-associated hospitalization ratesa and hazard ratiosb before and during outcome-monitoring period by intervention and control areas (primary analysis)
| Study areas | Hospitalizations/1000 person-years Before outcome-monitoring start date | Outcome-monitoring period | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 6–12 months before outcome-monitoring started 24/09/2010 to 23/03/2011 | 0–6 months before outcome-monitoring startedc 24/03/2011 to 23/09/2011 | Term 1 24/09/2011 to 23/03/2012 | Term 2 24/03/2012 to 23/09/2012 | Term 3 24/09/2012 to 23/03/2013 | Term 4 24/03/2012 to 31/08/2013 | |||||
| Hospitalizations/1000 person- years | Hazard ratio 95% CI | Hospitalizations/1000 person- years | Hazard ratio 95% CI | Hospitalizations/1000 person- years | Hazard ratio 95% CI | Hospitalizations/1000 person- years | Hazard ratio 95% CI | |||
| All study areas combined | 2.4 | 12.7 | 9.6 | – | 10.2 | – | 7.6 | – | 11.0 | – |
| Control | 1.2 | 13.7 | 9.8 | 1.0 | 10.3 | 1.0 | 7.9 | 1.0 | 11.2 | 1.0 |
| Vaccine-only | 3.2 | 12.5 | 8.8 | 0.90 (0.7–1.2) | 10.1 | 0.98 (0.8–1.2) | 7.8 | 0.99 (0.7–1.4) | 10.9 | 0.97 (0.7–1.4) |
| Vaccine-plus-behaviour-change | 2.8 | 12.1 | 10.2 | 1.04 (0.8–1.4) | 10.4 | 1.01 (0.8–1.2) | 7.1 | 0.90 (0.6–1.3) | 10.7 | 0.95 (0.7–1.3) |
aResults are cluster-adjusted.
bResults are only cluster-adjusted. Results that are adjusted for age, sex, education, toilet type, pre-intervention period hospitalizations and cluster were almost similar to the unadjusted results (data not shown).
cCholera vaccine was delivered during this period.