TABLE 2.

Multivariate logistic regression: likely to participate in genetic research and/or testing^*

Characteristic	Identities linked	Identities not linked	Genetic testing as optional service
Age (years)
16–19	0.84 (0.50–1.43)	1.78 (1.06–2.97)†	0.93 (0.53–1.61)
20–29	0.66 (0.45–0.96)†	1.62 (1.14–2.30)†	1.03 (0.68–1.55)
30–39	0.45 (0.32–0.64)†	1.32 (0.95–1.84)	0.91 (0.61–1.34)
40–49	0.54 (0.40–0.73)†	1.54 (1.15–2.05)†	0.84 (0.61–1.18)
50–59	0.80 (0.60–1.08)	1.30 (1.00–1.69)†	0.88 (0.65–1.20)
60 or more	1.00	1.00	1.00
Wald p value	<0.01†	0.04†	0.89
Sex
Male	1.00	1.00	1.00
Female	0.98 (0.81–1.20)	1.01 (0.84–1.21)	0.82 (0.67–1.02)
Wald p value	0.87	0.95	0.07
Race/ethnicity
Caucasian	1.00	1.00	1.00
Non-Caucasian	0.85 (0.67–1.08)	0.67 (0.53–0.84)†	0.96 (0.74–1.24)
Wald p value	0.18	<0.01†	0.74
Education
High school or less	0.76 (0.50–1.17)	0.33 (0.22–0.50)†	0.53 (0.35–0.83)†
Some college or trade school	0.94 (0.72–1.22)	0.55 (0.43–0.71)†	0.88 (0.66–1.17)
Completed college (bachelor’s degree)	0.96 (0.74–1.23)	0.79 (0.62–1.00)	1.02 (0.77–1.35)
Graduate school or higher	1.00	1.00	1.00
Wald p value	0.67	<0.01†	0.02†
Number of donations in past 5 years
First-time	0.54 (0.33–0.86)†	0.45 (0.28–0.73)†	0.65 (0.39–1.08)
1–3 times	0.74 (0.54–1.02)	0.68 (0.50–0.92)†	0.78 (0.55–1.10)
4–5 times	0.76 (0.54–1.06)	0.61 (0.44–0.84)†	0.98 (0.68–1.43)
6–10 times	0.87 (0.64–1.17)	0.77 (0.58–1.02)	0.97 (0.70–1.36)
11–20 times	0.89 (0.66–1.20)	0.81 (0.61–1.06)	0.95 (0.69–1.31)
More than 20 times	1.00	1.00	1.00
Wald p value	0.14	0.01†	0.46

^*Data are reported as OR (95% CI).

^†Significant at p < 0.05.