Table 1.
Univariate analysis of general characteristics and cognitive function.
| General characteristics | Normal cognitive function | Cognitive impairment | Dementia | Total number | Z-statistic | P-value |
|---|---|---|---|---|---|---|
| Current age | ||||||
| 60–79 years | 258 (73.30%) | 1877 (51.37%) | 1988 (36.38%) | 4123 (43.53%) | −17.439 | <0.01 |
| ≥80 years | 94 (26.70%) | 1777 (48.63%) | 3477 (63.62%) | 5348 (56.47%) | ||
| Sex | ||||||
| Female | 117 (33.24%) | 1939 (53.07%) | 3412 (62.43%) | 5468 (57.73%) | −11.801 | <0.01 |
| Male | 235 (66.76%) | 1715 (46.93%) | 2053 (37.57%) | 4003 (42.27%) | ||
| Education level | ||||||
| Educated | 340 (96.59%) | 2892 (79.15%) | 4110 (75.21%) | 7342 (77.52%) | −7.392 | <0.01 |
| Illiterate | 12 (3.41%) | 762 (20.85%) | 1355 (24.79%) | 2129 (22.48%) | ||
| Income | ||||||
| Pension | 339 (96.31%) | 3524 (96.44%) | 5268 (96.40%) | 9131 (96.41%) | −0.069 | 0.945 |
| Other | 13 (3.69%) | 130 (3.56%) | 197 (3.60%) | 340 (3.59%) | ||
| Marital status | ||||||
| Other | 97 (27.56%) | 1511 (41.35%) | 2768 (50.65%) | 4376 (46.20%) | −10.783 | <0.01 |
| Married | 255 (72.44%) | 2143 (58.65%) | 2697 (49.35%) | 5095 (53.80%) | ||
| Living situation | ||||||
| Not live with family | 82 (23.30%) | 1087 (29.75%) | 2520 (46.11%) | 3689 (38.95%) | −16.857 | <0.01 |
| Other | 270 (76.70%) | 2567 (70.25%) | 2945 (53.89%) | 5782 (61.05%) | ||
| Combined disease | ||||||
| <5 | 168 (47.73%) | 1534 (41.98%) | 2450 (44.83%) | 4152 (43.84%) | −1.921 | 0.055 |
| ≥5 | 184 (52.27%) | 2120 (58.02%) | 3015 (55.17%) | 5319 (56.16%) | ||
| Disability level | ||||||
| Mild | 55 (15.63%) | 209 (5.72%) | 84 (1.54%) | 348 (3.67%) | 772.529 | <0.01 |
| Moderate | 112 (31.82%) | 752 (20.58%) | 342 (6.26%) | 1206 (12.73%) | ||
| Severe | 185 (52.5%) | 2693 (73.70%) | 5039 (92.20%) | 7917 (83.59%) | ||