Table 1.

Relationship between reinfestation after first residual insecticide spray and time lapse during first spray

Model 1 (N = 1,156)	OR	95% CI	P value
Time lapse 180–360 days	1.54	1.07–2.23	0.022
Time lapse > 360 days	2.66	1.85–3.83	< 0.001
High cluster at baseline	1.17	0.90–1.53	0.220
Quarter 2 vs. quarter 1	0.68	0.48–0.97	0.034
Quarter 3 vs. quarter 1	1.07	0.75–1.53	0.696
Quarter 4 vs. quarter 1	0.77	0.51–1.17	0.229

Quarter 1 = January to March; quarter 2 = April to June; quarter 3 = July to September; quarter 4 = October to December.