Appendix Table 1. Correlates of Smartphone Ownership Among Mobile Phone Owners

	Unadjusted Models			Multivariate Model^* (n = 783)
	Patients (n)	OR (95% CI)	P Value	Adjusted OR (95% CI)	P Value
Age (years)	738
18–24		Reference		Reference
25–34		1.15 (0.60–2.20)	.67	1.14 (0.6–2.17)	.69
35–44		0.64 (0.34–1.21)	.17	0.69 (0.36–1.31)	.25
45–54		0.27 (0.15–0.49)	<.001	0.29 (0.16–0.54)	<.001
55–64		0.14 (0.08–0.27)	<.001	0.16 (0.09–0.31)	<.001
≥65		0.05 (0.02–0.11)	<.001	0.06 (0.03–0.14)	<.001
Sex
Male		Reference		Reference
Female	736	0.81 (0.56–1.17)	.26	0.69 (0.46–1.05)	.09
Race/ethnicity	743
White		Reference		Reference
Native American		0.93 (0.30–2.83)	.89	0.71 (0.21–2.46)	.59
Asian/Pacific Islander		1.45 (0.58–3.58)	.42	0.87 (0.3–2.51)	.80
African American		2.07 (0.67–6.41)	.21	1.27 (0.38–4.26)	.70
Latino		1.95 (0.90–4.20)	.09	1.05 (0.46–2.43)	.91
Other/multiracial		1.26 (0.66–2.37)	.48	0.86 (0.43–1.73)	.67
Any health literacy limitation	725	0.92 (0.67–1.27)	.62	0.92 (0.63–1.32)	.64
Any chronic medical condition	776	0.56 (0.41–0.77)	<.001	0.86 (0.6–1.25)	.43
Depression	690	0.84 (0.61–1.15)	.28	0.79 (0.55–1.16)	.23

All models are adjusted for clustering within clinics.
↵* The multivariate model reports results from a single model that includes all of the independent variables in the table. Multiple imputation was used for missing variables in the multivariate model.
CI, confidence interval; OR, odds ratio.