Disparities in Use of a Personal Health Record in a Managed Care Organization

Table 4

African American (AA) Effect from Multivariate Cox Proportional Hazard Regression of Time to Registration with KP.org: Stratified by Condition Cohort¹ and Level of Education²

	N	Percent AA	Hazard Ratio (HR) for AA Vs. White	Upper 95% CI	Lower 95% CI	p Value for HR = 0.00	p Value for Difference in HR^∗
Study population stratified by condition cohort
Diabetes	505	55%	0.63	0.86	0.47	<0.01	0.34
Elevated lipids	621	45%	0.72	0.96	0.55	0.02	0.19
Low Risk	651	47%	0.58	0.80	0.42	<0.01	—
Study population stratified by level of education
HS or less	356	53%	0.56	0.88	0.36	0.01	0.27
Some College	600	58%	0.64	0.87	0.47	<0.01	0.44
College Graduate	343	49%	0.66	0.98	0.44	0.04	0.73
Postgraduate College	444	35%	0.67	0.93	0.49	0.02	—

↵¹ Within the condition cohort models, independent variables include race/ethnicity, activation, level of education, age group, gender, and 2005 survey response (Internet vs. mail).
↵² Within the level of education models, independent variables include race/ethnicity, activation, condition cohort, age group, gender, and 2005 survey response (Internet vs. mail).
↵∗ Differences in HR by condition cohort or level of education tested by t-statistic (1df).

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