Table 2.

Linear regression model for predicting the number of times that the patient used the voice interface technology.

Variable	Coefficient	95% CI	P value
Intercept	17.93	−27.71 to 63.58	.43
Age	1.19	0.42 to 1.96	.004
Black	−15.96	−33.84 to 1.92	.08
Household income higher than US $100,000	12.28	−5.49 to 30.05	.17
Confidence in using technology	12.88	−3.66 to 29.42	.12
Number of medications to manage HFa	−5.49	−9.22 to −1.72	.005
Avatar study participant	−24.14	−44.29 to −3.98	.02

^aHF: heart failure.