Table 2.

E-cigarette and cigarette dependence predicting smoking and vaping frequency

Independent Variables	Days of Use	F	ηp2	t
Sex	E-cigarette	0.11	.00	0.03
	Cigarette	2.98	.01	1.73
Age	E-cigarette	0.75	.00	0.86
	Cigarette	19.26	.06***	4.39***
Race	E-cigarette	3.77	.01	−1.94
	Cigarette	0.43	.00	−0.65
Nicotine E-liquid Use	E-cigarette	1.51	.01	−1.23
	Cigarette	0.24	.00	−0.16
E-cigarette Dependence (PROMIS-E)	E-cigarette	41.69	.12***	6.46***
	Cigarette	9.26	.03***	−3.04**
Cigarette Dependence (PROMIS)	E-cigarette	7.37	.03**	−2.72**
	Cigarette	96.04	.24***	9.80***

Note. Reference groups are females (for sex) and non-White individuals (for race).

^**p < .01

^***p < .001