Table 1.
Demographic and clinical characteristics of the study samples.
| Total (n = 1,273) | Normal serum lipids (n = 519) | Dyslipidemia (n = 754) | df | p-value | |
|---|---|---|---|---|---|
| Age, years (mean ± SD) | 57.1 ± 9.7 | 56.5 ± 10.2 | 57.5 ± 9.3 | 1,271 | 0.062 |
| Gender, female (%) | 755 (59.3) | 275 (53.0) | 480 (63.7) | 1 | <0.001 |
| Education, years (mean ± SD) | 6.4 ± 3.4 | 6.8 ± 3.2 | 6.2 ± 3.5 | 1,271 | 0.003 |
| Drinking, n (%) | 153 (12.0) | 68 (13.1) | 85 (11.3) | 1 | 0.324 |
| Smoking, n (%) | 400 (31.4) | 187 (36.0) | 213 (28.2) | 1 | 0.003 |
| Lack of activity, n (%) | 252 (19.8) | 97 (18.7) | 155 (12.2) | 1 | 0.411 |
| Cardiovascular disease, n (%) | 114 (9.0) | 47 (9.1) | 67 (8.9) | 1 | 0.917 |
| Hypertension, n (%) | 479 (37.6) | 164 (31.6) | 315 (41.8) | 1 | <0.001 |
| Diabetes mellitus, n (%) | 142 (11.2) | 51 (9.8) | 91 (12.1) | 1 | 0.212 |
| MAP, mmHg (mean ± SD) | 95.7 ± 11.7 | 94 ± 12 | 97 ± 12 | 1,271 | <0.001 |
| Pulse rate, (mean ± SD) | 74 ± 10 | 73 ± 10 | 75 ± 10 | 1,271 | <0.001 |
| FBG, mmol/L, median (quartile) | 5.34 (5.02, 5.80) | 5.27 (4.98, 5.66) | 5.40 (5.05, 5.89) | — | <0.001 |
| BMI, kg/m2 (mean ± SD) | 25.10 ± 3.20 | 24.32 ± 3.06 | 25.62 ± 3.19 | 1,271 | <0.001 |
| Cognitive impairment, n (%) | 99 (7.8) | 41 (7.9) | 58 (7.7) | 1 | 0.892 |
| APOE ε4 carriers, n (%) | 189 (14.8) | 57 (11.0) | 132 (10.4) | 1 | 0.001 |
Unpaired Student’s t-test and mean ± SD were used to compare the difference of the approximately normally distributed continuous variables between normal serum lipids group and dyslipidemia group. Mann–Whitney U test and median (quartile) were used for the skew distributional data, and χ2 and percentage were used for categorical variables. SD, standard deviation; MAP, mean arterial pressure; FBG, fasting blood glucose; BMI, body mass index; APOE, apolipoprotein E.