Table 3. Cox Proportional Hazards Regression Model.

Effect	Adjusted HR (95% CI)	P value^a
Intervention vs control	1.24 (1.08 to 1.42)	.003
Age (per 1-y increment)	1.02 (1.01 to 1.03)	<.001
Male vs female	1.14 (0.99 to 1.31)	.06
Ethnicity
Hispanic	0.88 (0.70 to 1.10)	.25
Non-Hispanic	1 [Reference]	NA
Unknown	1.48 (1.08 to 2.02)	.02
Race
American Indian or Alaska Native	<0.01 (<0.01 to >0.99)	.99
Asian	1.25 (1.02 to 1.54)	.03
Black	1.01 (0.78 to 1.30)	.96
White	1 [Reference]	NA
Other	1.02 (0.82 to 1.26)	.89
Unknown	0.62 (0.42 to 0.91)	.02

Abbreviations: HR, hazard ratio; NA, not applicable.

^{^a}

Significance set at P < .05.