Table 1.
Participants’ demographic characteristics.
| Measures | Whole sample (n = 686) | 40s (n = 335) | 60s (n = 351) | t/χ2 test (p value) | Males (n = 352) | Females (n = 334) | t/χ2 test (p value) |
|---|---|---|---|---|---|---|---|
| Age, years (SD) | 55.28 (8.04) | 47.18 (1.36) | 63.01 (1.42) | −149.07 (<0.001)* | 55.65 (8.06) | 54.89 (8.00) | 1.24 (0.214) |
| Education, years (SD) | 14.49 (2.49) | 14.89 (2.24) | 14.11 (2.65) | 4.19 (<0.001)* | 14.85 (2.37) | 14.11 (2.55) | 3.93 (<0.001)* |
| Total years in study (SD) | 11.51 (1.68) | 11.53 (1.66) | 11.50 (1.70) | 0.03 (0.97) | 11.34 (1.74) | 11.59 (1.60) | −1.94 (0.05) |
| SBP, mmHg (SD) | 131.80 (18.24) | 125.41 (16.83) | 137.90 (17.45) | −9.54 (<0.001)* | 135.72 (16.58) | 127.68 (19.02) | 5.89 (<0.001)* |
| DBP, mmHg (SD) | 81.70 (10.02) | 80.83 (9.89) | 82.53 (10.09) | −2.23 (0.026)* | 84.15 (9.92) | 79.13 (9.47) | 6.78 (<0.001)* |
| MAP, mmHg (SD) | 98.40 (11.83) | 95.69 (11.57) | 100.99 (11.51) | −6.01 (<0.001)* | 101.34 (11.13) | 95.31 (11.77) | 6.89 (<0.001)* |
| BMI, kg/m2 (SD) | 26.91 (4.43) | 27.22 (4.61) | 26.61 (4.23) | 1.79 (0.074) | 27.10 (3.82) | 26.70 (4.98) | 1.18 (0.240) |
| Physical activity, METs/day | 39.15 (34.95) | 37.79 (31.78) | 40.44 (37.72) | −1.00 (0.319) | 44.92 (37.78) | 33.07 (30.58) | 4.53 (<0.001)* |
| Smoker, n (%) | 305 (44.46%) | 154 (45.97%) | 151 (43.02%) | 0.49 (0.484) | 138 (41.32%) | 167 (47.44%) | 2.36 (0.124) |
| Hypertension, n (%) | 306 (44.61%) | 93 (27.76%) | 213 (60.68%) | 73.86 (<0.001)* | 117 (50.02%) | 113 (33.83%) | 24.92 (<0.001)* |
| BP Med, n (%) | 133 (19.39%) | 29 (8.66%) | 104 (29.63%) | 46.91 (<0.001)* | 61 (18.26%) | 72 (20.45%) | 0.40 (0.529) |
| Diabetes, n (%) | 86 (12.54%) | 21 (6.27%) | 65 (18.52%) | 22.35 (<0.001)* | 40 (11.98%) | 46 (13.07%) | 0.10 (0.752) |
| APOE ɛ4, n (%) | 204 (29.74%) | 101 (30.15%) | 103 (29.34%) | 0.02 (0.883) | 94 (28.14%) | 110 (31.25%) | 0.65 (0.420) |
Note. * indicates significance at p < 0.05.