Predicted mean SSOIT-12 test performance derived from linear regression model^† by age, race, and education among men. ^†Linear regression model: Intercept 9.59; Age (centered at 74 years)= −0.04 Female= 0.65; Black= −1.35; Less than high school education= −0.24; Greater than high school education= 0.26; SD (residual)^*= 1.91; ^*Root mean square error from full linear regression model.