Table 4.

| Predictors of daily e-cigarette use (N = 143).

	Step 1a		Step 1b		Step 2		Step 3
	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Age	1.04 (0.99, 1.10)	.10	1.05 (0.99, 1.10)	.08	1.05 (0.99, 1.10)	.07	1.05 (0.99, 1.10)	.08
Gender	1.57 (1.02, 2.41)	.04	1.66 (1.08, 2.57)	.02	1.63 (1.08, 2.47)	.02	1.50 (1.00, 2.26)	.05
Ethnicity	1.05 (0.75, 1.47)	.77	1.04 (0.74, 1.45)	.83	1.04 (0.76, 1.44)	.81	1.08 (0.79, 1.47)	.62
Education	0.96 (0.48, 1.92)	.92	1.03 (0.52, 2.02)	.94	1.04 (0.54, 2.02)	.90	0.95 (0.49, 1.85)	.87
Family Vaping	1.33 (0.82, 2.17)	.25	1.38 (0.85, 2.23)	.19	1.38 (0.89, 2.13)	.15	1.36 (0.92, 2.01)	.12
Friend Vaping	1.29 (0.92, 1.81)	.14	1.28 (0.92, 1.80)	.15	1.27 (0.91, 1.77)	.15	1.26 (0.92, 1.74)	.15
E-cigarette Addiction	1.26 (1.13, 1.40)	<.001	1.26 (1.14, 1.41)	<.001	1.26 (1.14, 1.39)	<.001	1.26 (1.14, 1.38)	<.001
Hassles	1.04 (0.91, 1.21)	.55			1.05 (0.91, 1.21)	.53	1.15 (0.98, 1.34)	.08
Uplifts			1.01 (0.88, 1.17)	.84	1.00 (0.86, 1.16)	.99	1.02 (0.88, 1.18)	.82
Hassles × Uplifts							0.89 (0.82, 0.96)	.005

Step 1a, −2LL = −857.0; Step 1b, −2LL = −857.3; Step 2, −2LL = −853.9; Step 3, −2LL = −855.6.