Table 2 Basic characteristics and univariate analysis of the participants by cognitive impairment
Variables | Assignments | N (%) | χ2 /t | P | ||
|---|---|---|---|---|---|---|
Total (N = 2,552) | Cognitive impairment | |||||
No (N = 2511) | Yes (N = 41) | |||||
Gender | 7.477 | 0.006 | ||||
 Male | Male = 0 | 1468(57.5%) | 1453 | 15 | ||
 Female | Female = 1 | 1084(42.5%) | 1058 | 26 | ||
Marital status | 15.100 | < 0.001 | ||||
 Married | Married = 0 | 1491(58.9%) | 1479 | 12 | ||
 Others | Others = 1 | 1041(41.1%) | 1012 | 29 | ||
Self-reported health | 10.294 | 0.001 | ||||
 Good | Good = 0 | 2266(88.8%) | 2236 | 30 | ||
 poor | poor = 1 | 285(11.2%) | 274 | 11 | ||
Sleep time(h)/day | 1.998 | 0.157 | ||||
 < 8 | < 8 = 0 | 1332(52.4%) | 1315 | 17 | ||
 ≥ 8 | ≥ 8 = 1 | 1210(47.6%) | 1186 | 24 | ||
Smoking | 0.934 | 0.627 | ||||
 No | No = 0 | 533(20.88%) | 523 | 10 | ||
 yes | yes = 1 | 1898(79.12%) | 1867 | 31 | ||
Drinking | 7.573 | 0.023 | ||||
 No | No = 0 | 397(15.25%) | 389 | 8 | ||
 yes | yes = 1 | 2155(84.75%) | 2122 | 33 | ||
Hearing loss | 13.878 | < 0.001 | ||||
 No | No = 0 | 567(22.21%) | 548 | 19 | ||
 yes | yes = 1 | 1974(77.79%) | 1952 | 22 | ||
Exercises | 6.352 | 0.012 | ||||
 No | No = 0 | 1694(67.0%) | 828 | 6 | ||
 yes | yes = 1 | 834(33.0%) | 1659 | 35 | ||
Economic status | 1.533 | 0.216 | ||||
 rich | rich = 0 | 2260(88.9%) | 2226 | 34 | ||
 poor | poor = 1 | 281(11.1%) | 274 | 7 | ||
Number of chronic diseases | 1.474 | 0.225 | ||||
 < 2 | < 2 = 0 | 2250(80.3%) | 2014 | 36 | ||
 ≥ 2 | ≥ 2 = 1 | 502(19.7%) | 497 | 5 | ||
BMI | 13.692 | 0.001 | ||||
 < 18.5 | < 18.5 = 0 | 319(12.7%) | 306 | 13 | ||
 18.5 ∼ 24.9 | 18.5 ∼ 24.9 = 1 | 1527(60.6%) | 1508 | 19 | ||
 ≥ 25 | ≥ 25 = 2 | 673(26.7%) | 664 | 9 | ||