Table 3.

Summary of actual sample

Strata	Proposed Sample				Actual Sample					P a
	Selected Blocks	Hispanic	Non-Hispanic	Group N	Selected Blocks	Hispanic	Non-Hispanic	Group N	% Hispanic Recruited
Stratum 1 (≤10%) b	10	5	55	60	12	3	41	44	7%	1.0d
Stratum 2 (10–30%)	10	20	40	60	12	15	35	50	30%	0.71c
Stratum 3 (30–50%)	12	36	12	48	18	33	24	57	58%	0.07c
Stratum 4 (> 50%)	12	48	0	48	22	55	11	66	83%	0.002d
Total	44	109	107	216	64	106	111	217

^aComparing the proposed distribution of surveys by ethnicity status to the proportions of surveys completed. P-values > 0.05 indicate that actual proportions did not differ from proposed population based proportions

^bProportion of Hispanic households in each individual block

^cChi-square test

^dFishers exact test