Table 1.
Characteristics of the studied population.
| Total (N = 924) | Hui (N = 306) | Han (N = 618) | P value∗ | |
|---|---|---|---|---|
| Age, mean (SD), and years | 66.4 (6.6) | 65.4 (6.8) | 66.9 (6.5) | 0.001 |
| Gender, female, n (%) | 571 (61.8) | 183 (59.8) | 388 (62.7) | 0.380 |
| Education, n (%) | ||||
| No formal education | 239 (25.9) | 106 (34.6) | 133 (21.5) | <0.001 |
| Primary school | 253 (27.4) | 89 (29.1) | 164 (26.5) | |
| Junior high school | 254 (27.5) | 69 (22.5) | 185 (29.9) | |
| Senior high school or above | 178 (19.3) | 42 (13.7) | 136 (22.0) | |
| Living arrangement, alone, n (%) | 187 (20.2) | 48 (15.7) | 139 (22.5) | 0.015 |
| Smoking, yes, n (%) | 218 (23.6) | 48 (15.6) | 170 (27.5) | <0.001 |
| Alcohol use, yes, n (%) | 115 (12.4) | 14 (4.5) | 101 (16.3) | <0.001 |
| TC mean (SD) (mmol/L) | 4.7 (0.9) | 4.6 (1.0) | 4.8 (0.9) | 0.051 |
| TG mean (SD) (mmol/L) | 1.8 (0.8) | 1.7 (0.9) | 1.8 (0.8) | 0.273 |
| HDL mean (SD) (mmol/L) | 4.0 (1.0) | 4.0 (1.0) | 4.0 (1.0) | 0.738 |
| LDL mean (SD) (mmol/L) | 3.2 (0.6) | 3.2 (0.7) | 3.2 (0.6) | 0.307 |
| SBP mean (SD) (mmHg) | 149.7 (20.4) | 151.2 (20.9) | 148.9 (20.2) | 0.104 |
| DBP mean (SD) (mmHg) | 87.0 (11.5) | 88.5 (11.4) | 86.3 (11.4) | 0.005 |
| MCI, yes, n (%) | 181 (19.6) | 66 (21.5) | 115 (18.6) | 0.286 |
| apoE genotype n (%) | ||||
| ε2/2 | 19 (2.1) | 8 (2.6) | 11 (1.8) | 0.517 |
| ε2/3 | 122 (13.2) | 39 (12.4) | 83 (13.4) | |
| ε2/4 | 3 (0.3) | 2 (0.7) | 1 (0.2) | |
| ε3/3 | 715 (77.4) | 237 (77.2) | 479 (77.5) | |
| ε3/4 | 58 (6.3) | 17 (5.5) | 41 (6.6) | |
| ε4/4 | 7 (0.8) | 4 (1.3) | 3 (0.5) | |
| apoE allele frequency, n (%) | ||||
| ε2 | 163 (8.8) | 57 (9.3) | 106 (8.6) | 0.752 |
| ε3 | 1,612 (87.1) | 530 (86.3) | 1082 (87.5) | |
| ε4 | 75 (4.0) | 27 (4.4) | 48 (3.9) | |
| ε4 carrier, yes, n (%) | 68 (7.4) | 23 (7.5) | 45 (7.2) | 0.898 |
| ε2 carrier, yes, n (%) | 144 (15.6) | 49 (16.0) | 95 (15.4) | 0.800 |
| Risk index, mean (SD) | 0.1 (0.5) | 0.1 (0.5) | 0.1 (0.5) | 0.913 |
*P value of Hui with Han; TC: total cholesterol; TG: triglyceride; HDL: high density lipoprotein; LDL: low density lipoprotein; SBP: systolic blood pressure; DBP: diastolic blood pressure.