Table 1.

Peters-Belson method applied to incident Dual Incontinence, separately for three racial/ethnic groups in elderly admissions to nursing homes: Hispanics, Blacks, and Asians.

	Hispanics	Blacks	Asians
N homes with both Whites and the racial/ethnic group	134	277	90
N residents
in the racial/ethnic group	609	2,803	560
White	16,230	30,637	12,725
N (%) events
in the racial/ethnic group	80 (13%)	569 (20%)	63 (11%)
among Whites	1,782 (11%)	3,670 (12%)	1,300 (10%)
Event rate per person-year of follow-up
in the racial/ethnic group	0.41	0.49	0.47
among Whites	0.43	0.38	0.44
Median time-to-event (days) for those with DI
in the racial/ethnic group	180.0	124.0	217.0
among Whites	148.5	150.0	141.0
Median time-to-censoring (days) for those without DI
in the racial/ethnic group	14.0	29.0	22.0
among Whites	14.0	19.0	13.0
Log rank z-test statistic	-0.71	4.04	-0.63
naïve test p-value	0.48	<0.0001	0.53
bootstrap test p-value	0.52	0.01	0.38
Standardized Mortality Ratio estimate	0.92	1.18	0.92
naïve test 95% Confidence Interval	(0.74,1.15)	(1.09,1.29)	(0.72,1.18)
bootstrap 95% Confidence Interval	(0.71,1.20)	(1.04,1.34)	(0.71,1.12)