Table 1.
Descriptive analysis of the characteristics of the participants in the 2010 survey (3rd wave).
| Variable | Categories | Normal (N = 3,341) | MCI (N = 694) | Dementia (N = 250) |
|---|---|---|---|---|
| Mean ±SD or N (%) | ||||
| Age | 60.14 ± 7.96 | 65.61 ± 8.08 | 69.46 ± 9.06 | |
| Sex | Male | 1,590 (47.59) | 289 (41.64) | 113 (45.20) |
| Female | 1,751 (52.41) | 405 (58.36) | 137 (54.80) | |
| Education | Elementary school | 956 (28.62) | 405 (58.36) | 154 (61.6) |
| Middle school | 679 (20.33) | 124 (17.87) | 44 (17.6) | |
| High school | 1,260 (37.72) | 138 (19.88) | 38 (15.2) | |
| Above college | 445 (13.32) | 27 (3.89) | 14 (5.6) | |
| Marital state | Not married/not partnered | 397 (11.88) | 127 (18.30) | 74 (29.60) |
| Married/partnered | 2,944 (88.12) | 567 (81.70) | 176 (70.40) | |
| Social contact | No one | 79 (2.36) | 28 (4.03) | 16 (6.4) |
| Rarely meet | 7 (0.21) | 1 (0.14) | 0 (0) | |
| 1–6/year | 218 (6.52) | 87 (12.54) | 22 (8.8) | |
| 1–2/months | 834 (24.96) | 108 (15.56) | 37 (14.8) | |
| 1/week | 812 (24.3) | 142 (20.46) | 59 (23.6) | |
| 2–3/weeks | 454 (13.59) | 102 (14.7) | 32 (12.8) | |
| Everyday | 937 (28.05) | 226 (32.56) | 84 (33.6) | |
| Personal allowance (USD) | 173.39 ± 162.57 | 126.08 ± 154.88 | 107.31 ± 83.25 | |
| Depression | 1.38 ± 1.45 | 1.61 ± 1.82 | 1.5 ± 1.92 | |
| MMSE score | 28.15 ± 1.85 | 27.07 ± 2.00 | 27.37 ± 2.08 | |
| Smoking | No smoking | 2,239 (67.02) | 476 (68.59) | 166 (66.4) |
| Past smoking | 474 (14.19) | 104 (14.99) | 33 (13.2) | |
| Current smoking | 628 (18.8) | 114 (16.43) | 51 (20.4) | |
| Alcohol assumption | No drinking | 1,590 (47.59) | 365 (52.59) | 137 (54.8) |
| Past drinking | 326 (9.76) | 80 (11.53) | 28 (11.2) | |
| Current drinking | 1,425 (42.65) | 249 (35.88) | 85 (34) | |
| Exercise | Adequate (More than 150 min/week) | 653 (19.55) | 125 (18.01) | 69 (27.60) |
| Deficient (<150 min/week) | 686 (20.53) | 105 (15.13) | 28 (11.20) | |
| No exercise | 2,002 (59.92) | 464 (66.86) | 153 (61.20) | |
| ADL | 0.01 ± 0.15 | 0.02 ± 0.28 | 0.02 ± 0.20 | |
| IADL | 0.13 ± 0.61 | 0.13 ± 0.76 | 0.18 ± 0.83 | |
USD = 1,118.30 Korean Won, average exchange rate between 2010 and 2018.
MCI, mild cognitive impairment; MMSE, mini mental state examination; ADL, activity of daily living; IADL, instrumental activity of daily living.