Table 2. Differences in covariates between the cognitive impairment group and the normal cognition group.
| Variables | CI (n = 231) | NC (n = 1568) | P |
|---|---|---|---|
| Gender [n(%)] | 0.300 | ||
| Male | 86(11.8) | 640(88.2) | |
| Female | 145(13.5) | 928(86.5) | |
| Age [n(%)] | <0.001 | ||
| 40–49 | 27(4.6) | 557(95.4) | |
| 50–59 | 88(14.3) | 527(85.7) | |
| 60–69 | 52(12.6) | 362(87.4) | |
| ≥70 | 64(34.4) | 122(65.6) | |
| Edu years [Median(P25,P75), y] | 5(0,8) | 8(5,9) | <0.001 |
| Marital status [n(%)] | <0.001 | ||
| Married | 195(11.9) | 1446(88.1) | |
| Others | 36(22.8) | 122(77.2) | |
| DM [n(%)] | 0.001 | ||
| Y | 44(20.0) | 176(80.0) | |
| N | 187(11.8) | 1392(88.2) | |
| CHD [n(%)] | 0.001 | ||
| Y | 13(28.9) | 32(71.1) | |
| N | 218(12.4) | 1536(87.6) | |
| Dyslipidemia [n(%)] | 0.121 | ||
| Y | 129(14.0) | 790(86.0) | |
| N | 102(11.6) | 778(88.4) | |
| TIA [n(%)] | 0.283 | ||
| Y | 2(6.5) | 29(93.5) | |
| N | 229(13.0) | 1539(87.0) | |
| Family history of stroke [n(%)] | 0.002 | ||
| Y | 28(7.9) | 325(92.1) | |
| N | 203(14.0) | 1243(86.0) | |
| Family history of CHD [n(%)] | <0.001 | ||
| Y | 5(4.3) | 111(95.7) | |
| N | 225(13.4) | 1451(86.6) | |
| U | 1(14.3) | 6(85.7) | |
| Family history of HP [n(%)] | <0.001 | ||
| Y | 45(8.1) | 512(91.9) | |
| N | 185(14.9) | 1053(85.1) | |
| U | 1(25.0) | 3(75.0) | |
| Family history of DM [n(%)] | 0.072 | ||
| Y | 16(11.0) | 130(89.0) | |
| N | 214(13.0) | 1431(87.0) | |
| U | 1(12.5) | 7(87.5) | |
| Tobacco use [n(%)] | 0.640 | ||
| Y | 63(12.3) | 451(87.7) | |
| N | 168(13.1) | 1117(86.9) | |
| Alcohol consumption [n(%)] | 0.197 | ||
| Y | 26(10.3) | 226(89.7) | |
| N | 205(13.3) | 1342(86.7) | |
| Lack of physical activity [n(%)] | 0.020 | ||
| Y | 47(17.2) | 227(82.8) | |
| N | 184(12.1) | 1341(87.9) | |
| Cardiac murmur [n(%)] | 0.058 | ||
| Y | 8(26.7) | 22(73.3) | |
| N | 222(12.7) | 1532(87.3) | |
| U | 1(6.7) | 14(93.3) | |
| Arrhythmia [n(%)] | 0.111 | ||
| Y | 9(20.9) | 34(79.1) | |
| N | 222(12.7) | 1527(87.3) | |
| U | 0(0.0) | 7(100) | |
| Antihypertensive drugs [n(%)] | 0.108 | ||
| Y | 40(16.0) | 210(84.0) | |
| N | 191(12.3) | 1358(87.7) | |
| WHR [Median(P25, P75)] | 0.889(0.843,0.925) | 0.879(0.842,0.916) | 0.165 |
| BMI [Mean(SD), kg/m2] | 24.86(3.38) | 25.37(3.18) | 0.024 |
| Pulse rate [Mean(SD)] | 76.05(10.62) | 75.22(8.52) | 0.182 |
| TC [Mean(SD), mmol/L] | 5.19(1.06) | 5.02(0.99) | 0.017 |
| TG [Median(P25,P75), mmol/L] | 1.47(1.02,2.03) | 1.43(1.03,2.00) | 0.605 |
| LDL [Mean(SD), mmol/L] | 3.42(0.95) | 3.30(0.89) | 0.046 |
| HDL [Mean(SD),mmol/L] | 1.43(0.31) | 1.40(0.31) | 0.133 |
| FBG [Median(P25,P75),mmol/L] | 5.42(5.05,6.02) | 5.40(5.07,5.81) | 0.335 |
Edu, education; CI, cognitive impairment; NC, normal cognition; DM, diabetes mellitus; CHD, coronary heart disease; TIA, transient ischemic attack; HP, hypertension; WHR, waist-to-hip ratio; BMI, body mass index; TC, total cholesterol; TG, triglycerides; LDL, low-density lipoprotein; HDL, high-density lipoprotein; FBG, fasting blood glucose.