Table 2.

Factorⁱ and regression analyses of reasons for participation

Reasons for participating	Factor 1 (personal benefit)	Factor 2 (altruism)
To advance AD research	−0.04	0.79
To benefit society	0.09	0.78
To benefit future generations of own family	0.21	0.59
Because I have concerns about memory	0.62	–0.11
To gain access to future treatments	0.72	0.11
To learn more about AD	0.60	0.21
To enjoy time with staff	0.43	0.19
To access medical center support	0.80	0.04
Predictors of the factor scores for each category of motivation (OLS regression coefficients and robust standard errors)
CDR Score >0 (0 if CDR=0; 1 if CDR>0)	0.59** (0.08)	−0.33** (0.11)
Trust medical researchers (1, not at all, to 5, a great deal)	0.09 (0.05)	0.32** (0.06)
Male	0.10 (0.08)	−0.07 (0.09)
Black	0.48** (0.11)	0.13 (0.15)
Asian	0.28* (0.14)	−0.08 (0.14)
Other race	0.57* (0.28)	−0.22 (0.29)
Knight ADRC	−0.35** (0.11)	−0.05 (0.14)
Wisconsin ADRC	−0.23** (0.12)	0.09 (0.12)
UCI ADRC	0.14 (0.12)	0.09 (0.13)
N	439	439
Adjusted R 2	0.19	0.13

^**p<0.01;

^*p<0.05.

ⁱVarimax (orthogonal) rotation.