Table 2.

Overall and Stratified Campaign Effectiveness

Campaign Effectiveness	Odds Ratio (95% CI)	Campaign Effectiveness, % (95% CI)	P Value
Overall campaign effectiveness	0.44 (.26 to .75)	56% (25 to 74)	.003
Stratified by age	…	…
<5 years (case n = 21, control n = 64)	0.70 (.24 to 2.10)	30% (–110 to 76)	.5
≥5 years (case n = 60, control n = 174)	0.37 (.19 to .70)	63% (30 to 81)	.002
Stratified by time since vaccination campaign	…	…
≤365 days (case n = 45, control n = 135)	0.30 (.14 to .64)	70% (36 to 86)	.002
>365 days (case n = 36, control n = 103)	0.75 (.33 to 1.70)	25% (–70 to 67)	.5