Table 6.

Multivariable Associations With Validated Cessation at Delivery (n = 957, 91.1%)

Variable	N	Adjusted	95% Confidence Interval		LRT
		OR	Lower	Upper	P
Adherence 0–56 days	957	1.06	1.03	1.09	<.001
Heaviness of smoking index (HSI)
0–3	631	ref	—	—	.002
4–6	326	0.74	0.61	0.89
Treatment assignment
Placebo	483	ref	—	—	.355
NRT	474	1.25	0.78	2.00

LRT = likelihood ratio test; NRT = nicotine replacement therapy; OR = odds ratio.