. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: J Investig Med. 2014 Jan;62(1):26–32. doi: 10.231/JIM.0000000000000022

TABLE 3.

Stepwise Logistic Regression Model Results Comparing Those Who Did and Did Not Consent to the Genetic Substudy (Model 1), Comparing Those Who Did and Did Not Return the DNA Kit, Among Those Consenting to Be in the Genetic Substudy (Model 2), and, Comparing Genetic Substudy Participants to Those Participating in the Parent Study Only (Model 3)

	Model 1 (Consent to Genetic Substudy)		Model 2 (DNA Kit Return Among Consenting)		Model 3 (DNA Kit Return to Parent Study)

Characteristic	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Age at interview (per 2 y)	1.05 (0.99–1.12)	0.106	1.03 (0.99–1.08)	0.159	1.05 (1.01–1.10)	0.017
Male	1.44 (0.77–2.69)	0.256	1.70 (1.09–2.65)	0.020	1.70 (1.14–2.55)	0.009
African American	0.56 (0.30–1.05)	0.072	0.61 (0.39–0.95)	0.030	0.54 (0.36–0.80)	0.002
HbA_1c	NS	—	0.87 (0.75–1.00)	0.043	NS	—
Physically active	NS	—	0.58 (0.37–0.91)	0.019	0.60 (0.40–0.90)	0.013

CI indicates confidence interval; NS, not selected in stepwise logistic regression procedure; OR, odds ratio.