Table 4.

Cochran-Mantel-Haenszel (CMH) Test for Difference in Consent Rates and Breslow-Day Test for Homogeneity of Consent Rates Between Groups by Recruitment Strategy Controlling for Location Within Cohort 2^*

			Consent Rate
Control Variable	Control Variable Level	Recruitment Strategy	No. Approached	No. Enrolled	%	CMHp	Breslow-Day p
Location	Urban	Parent session	47	44	93.6	<0.0001	0.0473
		Packet distribution	100	22	22.0
	Rural	Parent session	81	81	100.0
		Packet distribution	167	48	28.7

^*No. Approached = families attending the parent session or receiving a packet by distribution; No. Enrolled = families consenting and enrolling in the study at the parent session or by returning the packet.