TABLE 4.

Multivariate associations between Isolation scores, sociodemographic covariates, and latent class membership

		Isolation score	Sex	Age	Parental education
ECIG (vs non)	B (SE), P value	−0.06 (0.08), .445	−0.47 (0.29), .042	0.21 (0.10), .036	−0.65 (0.08), <.001
	OR (CI)	0.94 (0.82, 1.08)	0.63 (0.39, 1.00)	1.24 (1.05, 1.47)	0.52 (0.46, 0.59)
Exp (vs non)	B (SE), P value	0.26 (0.11), .013	−0.17 (0.46), .714	0.44 (0.13), .001	−0.96 (0.20), <.001
	OR (CI)	1.30 (1.09, 1.54)	0.84 (0.39, 1.81)	1.55 (1.26, 1.90)	0.39 (0.28, 0.54)
Poly (vs non)	B (SE), P value	0.42 (0.22), .039	−0.90 (0.35), .009	0.52 (0.19), .007	−0.43 (0.35), .043
	OR (CI)	1.51 (1.06, 2.17)	0.41 (0.23, 0.72)	1.67 (1.22, 2.30)	0.65 (0.37, 1.16)
Exp (vs ECIG)	B (SE), P value	0.32 (0.16), .057	0.30 (0.45), .512	0.22 (0.16), .163	−0.31 (0.20), .123
	OR (CI)	1.38 (1.07, 1.78)	1.34 (0.64, 2.82)	1.25 (0.96, 1.62)	0.74 (0.53, 1.02)
Poly (vs ECIG)	B (SE), P value	0.48 (0.23), .041	−0.44 (0.46), .342	0.30 (0.22), .163	0.22 (0.32), .485
	OR (CI)	1.61 (1.10, 2.37)	0.65 (0.31, 1.38)	1.35 (0.95, 1.93)	1.25 (0.74, 2.10)
Poly (vs Exp)	B (SE), P value	0.16 (0.26), .548	−0.73 (0.39), .046	0.08 (0.20), .699	0.53 (0.36), .039
	OR (CI)	1.17 (0.76, 1.17)	0.48 (0.25, 0.91)	1.08 (0.77, 1.51)	1.69 (0.94, 3.04)

Abbreviations: CI, 95% confidence interval; ECIG, current ECIG users; Exp, cigarette/ECIG experimenters; Non, nonusers; OR, odds ratio; Poly, polytobacco users.

Note. Parental education was entered into models as a continuous variable.