Table 5.

Association of Portal Use With Patient Self-rating of Current Health

	Variable	β Estimate	Lower Limit of 95% CI	Upper Limit of 95% CI	P
Univariable model	Portal use (yes compared to no)	0.28	0.02	0.54	0.03
Multivariable model	Portal use (yes compared to no)	0.12	−0.18	0.41	0.45
	Age (y)	0	−0.01	0.01	0.91
	Sex (compared to female)
	Male	0.03	−0.24	0.29	0.85
	Race (compared to White)
	African American	−0.15	−0.54	0.23	0.44
	Other	0.13	−0.38	0.64	0.61
	Education (compared to ≥HS graduate)
	<HS graduate	0.01	−0.86	0.88	0.98
	Income (compared to ≥$50,000)
	<$25,000	−0.36	−0.73	0	0.05
	$25,000-<$50,000	−0.06	−0.4	0.28	0.73
	Stage (compared to stage 3)
	Stage 1-2	0.29	−0.17	0.74	0.21
	Stage 4-5	−0.24	−0.53	0.04	0.1

Note: Linear regression models of univariable and multivariable associations between patient-reported outcomes, portal use, and patient demographics. All models exclude patients who responded “I don’t know” or who did not respond to the portal use question.

Abbreviation: HS, high school.