Table 2.

Multinomial logistic regression (iCanQuit arm) and logistic regression (QuitGuide arm) results predicting log-in trajectory group membership from Akaike Information Criterion model–selected baseline characteristics^a.

Arm, trajectory group, and characteristic				Odds ratio (95% CI)
iCanQuit
	4-week users
		Age (years)	1.01 (0.99-1.02)
		Smokes ≤10 cigarettes per day	1.25 (0.89-1.76)
		First cigarette >5 minutes after waking	1.42 (1.05-1.92)
		Number of quit attempts in previous year	1.03 (0.99-1.08)
		Each point increase in acceptance of physical sensations	1.82 (1.41-2.35)
	26-week users
		Age (years)	1.05 (1.03-1.06)
		Smokes ≤10 cigarettes per day	1.90 (1.25-2.87)
		First cigarette >5 minutes after waking	1.42 (0.96-2.08)
		Number of quit attempts in previous year	0.92 (0.83-1.02)
		Each point increase in acceptance of physical sensations	1.23 (0.88-1.71)
QuitGuide: 3-week users
	Gender (female)			1.46 (1.10-1.95)
	Minority race or ethnicity			1.40 (1.08-1.83)
	Anxiety screen positive			0.75 (0.55-1.02)
	Smoked for ≥10 years			1.56 (1.04-2.35)

^aThe reference group is 1-week users for both treatment arms.