Table 5.

Associations between user characteristics and response rates: from quit date to days 7-21, imputed data.

Characteristics		Quit date (n=1082)a		Day 7 (n=813)a		Day 14 (n=727)a		Day 21 (n=678)a
		aORb (95% CI)	P value	aOR (95% CI)	P value	aOR (95% CI)	P value	aOR (95% CI)	P value
Age (winsorized)		0.99 (0.97-1.01)	.27	0.98 (0.95-1.01)	.25	0.99 (0.97-1.03)	.73	1.00 (0.97-1.04)	.80
Race and ethnicity (reference: white)
	Black	1.05 (0.71-1.54)	.82	0.85 (0.49-1.45)	.55	0.87 (0.50-1.53)	.64	1.01 (0.57-1.78)	.97
	Latina	0.58 (0.33-1.01)	.05	0.63 (0.28-1.41)	.26	1.22 (0.56-2.62)	.62	0.35 (0.10-1.19)	.09
	Multiracial, Asian, AI/ANc, NHPId, other	0.86 (0.53-1.39)	.53	0.86 (0.47-1.60)	.64	1.61 (0.87-2.97)	.13	1.04 (0.49-2.22)	.91
Education (reference: college degree or higher)
	High school or less	0.64 (0.40-1.02)	.06	0.29 (0.15-0.56)	<.001	0.56 (0.26-1.20)	.14	0.73 (0.30-1.75)	.47
	Some college	0.98 (0.65-1.48)	.93	0.64 (0.38-1.06)	.08	1.10 (0.57-2.14)	.77	1.45 (0.65-3.22)	.36
Region (reference: South)
	Northeast	1.20 (0.80-1.82)	.38	1.25 (0.71-2.17)	.44	1.21 (0.68-2.16)	.52	1.12 (0.58-2.15)	.74
	Midwest	1.13 (0.81-1.58)	.47	0.96 (0.59-1.53)	.85	1.41 (0.88-2.28)	.16	1.44 (0.87-2.38)	.15
	West	1.26 (0.85-1.85)	.25	1.32 (0.78-2.23)	.30	1.02 (0.56-1.85)	.94	0.48 (0.21-1.06)	.07
Cigarettes per day (reference: light)
	Moderate	1.21 (0.89-1.65)	.22	1.18 (0.78-1.78)	.45	1.49 (0.96-2.32)	.07	0.91 (0.55-1.50)	.71
	Heavy	0.92 (0.52-1.63)	.78	0.64 (0.24-1.74)	.38	1.13 (0.46-2.74)	.79	1.58 (0.65-3.83)	.32
Smoking frequency (reference: nondaily)
	Daily	0.69 (0.46-1.05)	.08	0.71 (0.42-1.19)	.19	0.54 (0.31-0.94)	.03	0.91 (0.47-1.76)	.77
Prequit time		0.99 (0.97-1.02)	.51	0.97 (0.94-1.00)	.08	1.01 (0.98-1.05)	.50	0.99 (0.95-1.03)	.66

^aNumber of users who had not dropped out of the intervention and had the opportunity to respond (or not) each time smoking status was assessed.

^baOR: adjusted odds ratio.

^cAI/AN: American Indian/Alaska Native.

^dNHPI: Native Hawaiian and Pacific Islander.