Table 2 Baseline characteristics of the study participants in different subgroups
Item | Subgroups | |||||
|---|---|---|---|---|---|---|
Sex groups | Age groups | |||||
Men | Women | P value | Mid-life adults | Older adults | P value | |
n | 1120 | 1126 | 1160 | 1086 | ||
Age, years | 65.87 ± 7.71 | 65.29 ± 7.25 | 0.139 | 59.70 ± 2.78 | 71.87 ± 5.58 | < 0.001 |
BMI, kg/m2 | 23.76 ± 3.48 | 24.61 ± 3.67 | < 0.001 | 24.35 ± 3.56 | 24.00 ± 3.64 | 0.013 |
SBP, mmHg | 136.45 ± 18.83 | 136.68 ± 19.42 | 0.964 | 133.87 ± 18.38 | 139.45 ± 19.48 | < 0.001 |
DBP, mmHg | 83.49 ± 10.91 | 82.36 ± 10.18 | 0.069 | 83.36 ± 10.69 | 82.46 ± 10.41 | 0.111 |
Nationality, Han, n(%) | 992 (88.57) | 1011 (89.79) | 0.390 | 1053 (90.78) | 950 (87.48) | 0.014 |
Smokers, n(%) | 595 (53.13) | 47 (4.17) | < 0.001 | 339 (29.22) | 303 (27.90) | 0.518 |
Alcohol use/last year, n(%) | 566 (50.54) | 55 (4.88) | < 0.001 | 364 (31.38) | 257 (23.66) | < 0.001 |
Education level, n(%) | < 0.001 | < 0.001 | ||||
Low | 426 (38.04) | 678 (60.21) | 463 (39.91) | 641 (59.02) | ||
Medium | 565 (50.45) | 352 (31.26) | 597 (51.47) | 320 (29.47) | ||
High | 129 (11.52) | 96 (8.53) | 100 (8.62) | 125 (11.51) | ||
Self-reported memory status, n(%) | 0.012 | < 0.001 | ||||
Very good | 97 (8.66) | 67 (5.95) | 117 (10.09) | 47 (4.33) | ||
Good | 293 (26.16) | 260 (23.09) | 339 (29.22) | 214 (19.71) | ||
OK | 520 (46.43) | 544 (48.31) | 549 (47.33) | 515 (47.42) | ||
Bad | 191 (17.05) | 237 (21.05) | 142 (12.24) | 286 (26.34) | ||
Very bad | 19 (1.70) | 18 (1.60) | 13 (1.12) | 24 (2.21) | ||
Self-reported changes in memory status, n(%) | 0.011 | < 0.001 | ||||
Improved or stayed the same | 614 (54.82) | 553 (49.11) | 697 (60.09) | 470 (43.28) | ||
Deteriorated | 506 (45.18) | 573 (50.89) | 463 (39.91) | 616 (56.72) | ||
Cognitive function score | 13.20 ± 4.71 | 12.83 ± 4.76 | 0.061 | 13.65 ± 4.63 | 12.34 ± 4.76 | < 0.001 |
Serum lipids | ||||||
TG, mmol/L | 1.23 (1.10) | 1.44 (1.23) | < 0.001 | 1.35 (1.23) | 1.34 (1.12) | 0.218 |
TC, mmol/L | 4.80 (1.22) | 5.12 (1.25) | < 0.001 | 4.96 (1.25) | 4.99 (1.29) | 0.911 |
HDL, mmol/L | 1.38 (0.49) | 1.43 (0.49) | 0.001 | 1.42 (0.50) | 1.40 (0.47) | 0.652 |
LDL, mmol/L | 2.96 (1.14) | 3.21 (1.22) | < 0.001 | 3.06 (1.19) | 3.09 (1.19) | 0.173 |