Table 1. Descriptive characteristics of the study population.
| Characteristic | Men | Women | ||||
|---|---|---|---|---|---|---|
| No depression | Depression | P value | No depression | Depression | P value | |
| No. of people | 31,590 | 772 | 37,857 | 2,016 | ||
| Age, yr | 58.0±8.4 | 60.3±9.2 | <0.001 | 60.4±8.2 | 62.0±8.4 | <0.001 |
| Household income, quartiles | 0.051 | 0.001 | ||||
| 1st (highest) | 12,893 (40.8) | 302 (39.1) | 11,414 (30.2) | 678 (33.6) | ||
| 2nd | 9,365 (29.7) | 207 (26.8) | 10,995 (29.0) | 597 (29.6) | ||
| 3rd | 5,727 (18.1) | 161 (20.9) | 8,572 (22.6) | 413 (20.5) | ||
| 4th (lowest) | 3,605 (11.4) | 102 (13.2) | 6,876 (18.2) | 328 (16.3) | ||
| Smoking status | 0.394 | 0.368 | ||||
| Never smoker | 12,943 (41.0) | 326 (42.2) | 36,916 (97.5) | 1,956 (97.0) | ||
| Past smoker | 9,851 (31.2) | 223 (28.9) | 201 (0.8) | 18 (0.9) | ||
| Current smoker | 8,796 (27.8) | 223 (28.9) | 640 (1.7) | 42 (2.1) | ||
| Physical activity, time/wk | 0.228 | 0.872 | ||||
| None | 13,196 (41.8) | 328 (42.5) | 21,187 (56.0) | 1,134 (56.3) | ||
| 1–2 | 9,375 (29.7) | 226 (29.3) | 7,645 (20.2) | 408 (20.2) | ||
| 3–4 | 5,247 (16.6) | 115 (14.9) | 4,743 (12.5) | 258 (12.8) | ||
| 5–6 | 1,990 (6.3) | 46 (6.0) | 2,050 (5.4) | 98 (4.9) | ||
| 7 | 1,782 (5.6) | 57 (7.4) | 2,232 (5.9) | 118 (5.9) | ||
| Alcohol consumption, time/wk | <0.001 | 0.218 | ||||
| None | 11,743 (37.2) | 354 (45.9) | 31,943 (84.4) | 1,737 (86.2) | ||
| <1 | 6,701 (21.2) | 175 (22.7) | 4,094 (10.8) | 201 (10.0) | ||
| 1–2 | 6,668 (21.1) | 126 (16.3) | 1,159 (3.1) | 49 (2.4) | ||
| 3–4 | 4,374 (13.9) | 73 (9.5) | 449 (1.2) | 21 (1.0) | ||
| ≥5 | 2,104 (6.7) | 44 (5.7) | 212 (0.6) | 8 (0.4) | ||
| Body mass index, kg/m2 | 24.8±2.7 | 24.2±2.7 | <0.001 | 24.6±3.1 | 24.5±3.1 | 0.192 |
| Systolic blood pressure, mm Hg | 127.8±14.5 | 126.4±14.0 | 0.009 | 126.3±15.8 | 125.2±15.5 | 0.003 |
| Fasting serum glucose, mg/dL | 107.9±31.8 | 103.7±23.6 | <0.001 | 101.3±26.2 | 101.9±24.6 | 0.293 |
| Total cholesterol, mg/dL | 200.0±45.8 | 197.6±45.1 | 0.141 | 210.0±45.7 | 204.5±45.3 | <0.001 |
| Statin MPR | 0.4±0.4 | 0.4±0.4 | 0.840 | 0.4±0.3 | 0.5±0.4 | <0.001 |
| Charlson comorbidity index | <0.001 | <0.001 | ||||
| ≤1 | 14,167 (44.9) | 212 (27.5) | 13,901 (36.7) | 396 (19.6) | ||
| 2 | 7,537 (23.9) | 167 (21.6) | 9,507 (25.1) | 465 (23.1) | ||
| 3 | 4,899 (15.5) | 150 (19.4) | 6,943 (18.3) | 420 (20.8) | ||
| ≥4 | 4,987 (15.8) | 243 (31.5) | 7,506 (19.8) | 735 (36.5) | ||
Values are presented as mean±standard deviation or number (%). P value calculated by chi-square test for categorical variables and t-test for continuous variables.
MPR, medication possession ratio.