Table 4:

Results from simple linear regression assessing the bivariate relationships between each covariate and app use^* (N=316 observations from 158 participants)

Covariates		β	95% Confidence Interval	P-value
Age		0.003	−0.0006, 0.007	0.10
Gender	Male	Ref	-	-
	Female	0.10	0.02, 0.19	0.01
	Other^a	−0.16	−0.36, 0.04	0.12
Race	African American/Black	Ref	-	-
	White	0.06	−0.11. 0.22	0.51
	Unknown	−0.007	−0.13, 0.11	0.91
	Other	−0.13	−0.28, 0.02	0.09
Ethnicity	Non-Hispanic	Ref	-	-
	Hispanic	−0.04	−0.13, 0.05	0.41
Education	Below high school	−0.05	−0.16, 0.06	0.36
	High school	Ref	-	-
	Above high school	−0.08	−0.18, 0.01	0.09
Annual income	<$10,000	Ref	-	-
	$10,000–$19,999	0.06	−0.04, 0.16	0.28
	≥$20,000	0.05	−0.09, 0.19	0.48
	Don’t know	0.06	−0.08, 0.19	0.41
Relationship status	In a relationship	Ref	-	-
	Not in a relationship	−0.02	−0.11, 0.07	0.70
	Unknown	−0.42	−0.78, −0.05	0.02
Sexuality	Homosexual	Ref	-	-
	Heterosexual	0.003	−0.10, 0.10	0.95
	Bisexual	−0.06	−0.21, 0.08	0.37
	Other	−0.29	−0.50, −0.08	0.007
	Unknown	−0.05	−0.42, 0.32	0.78
Children	Yes	Ref	-	-
	No	−0.003	−0.09, 0.08	0.95
Confidence in completion medical forms independently		−0.011	−0.05, 0.03	0.63
Newest Vital Sign		0.028	−0.004, 0.06	0.07
Test of Functional Health Literacy in Adults		0.007	0.001, 0.01	0.02

Results from simple linear regression with dependent variable app use

Abbreviation: Health-ITUES, Health Information Technology Usability Evaluation Scale