Table 2.

Association of Respondent Characteristics With Cooperation in the National Social Life, Health, and Aging Project Saliva Protocol

Characteristics	Proportion (SE)	OR (95% Confidence Interval)a
Age (years)
57–64	0.91 (0.01)	1 (reference)
65–74	0.91 (0.01)	1.07 (0.72–1.61)
75–85	0.91 (0.01)	1.07 (0.70–1.63)
Gender
Men	0.92 (0.01)	1 (reference)
Women	0.90 (0.01)	0.81 (0.55–1.21)
Race/ethnicity
White	0.92 (0.01)	1 (reference)
Black	0.82 (0.03)	0.43* (0.23–0.81)
Hispanicb	0.92 (0.03)	1.12 (0.45–2.80)
Other	0.95 (0.02)	1.88 (0.85–4.14)
Education
Higher secondary and below	0.90 (0.01)	1 (reference)
Some college and higher	0.91 (0.01)	0.98 (0.75–1.29)
Self-rated health
Poor/fair	0.90 (0.01)	1 (reference)
Good	0.89 (0.01)	0.92 (0.62–1.35)
Very good/excellent	0.92 (0.01)	1.19 (0.85–1.67)

Notes: ^aOdds ratio of giving consent for saliva collection.^bBased on the questions “Do you consider yourself primarily White or Caucasian, Black or African American, American Indian, Asian, or something else?” and “Do you consider yourself Hispanic or Latino?” Six respondents who reported being both Hispanic and Black or African American were included in the Black group.

*p < .01.