Table 1:
Baseline characteristics of 5411 men with valid 15-item Geriatric Depression Scale ratings, by depression status*
| Characteristic | Group, no. (%) of participants† | p value | |
|---|---|---|---|
| No depression n = 5072 |
Depression n = 339 |
||
| Age group, yr | < 0.001‡ | ||
| 69–74 | 1804 (35.6) | 85 (25.1) | |
| 75–79 | 2185 (43.1) | 150 (44.2) | |
| 80–84 | 873 (17.2) | 78 (23.0) | |
| ≥ 85 | 208 (4.1) | 26 (7.7) | |
| Missing values | 0 (0.0) | 0 (0.0) | |
| Education | < 0.001‡ | ||
| None | 21 (0.4) | 4 (1.2) | |
| Primary | 766 (15.1) | 83 (24.5) | |
| Some secondary | 1915 (37.8) | 128 (37.8) | |
| Secondary | 1329 (26.2) | 71 (20.9) | |
| Postsecondary | 1037 (20.5) | 53 (15.6) | |
| Missing values | 2 (0.0) | 0 (0.0) | |
| Smoking | < 0.001‡ | ||
| Never | 1682 (33.2) | 69 (20.4) | |
| Past | 3132 (61.8) | 238 (70.4) | |
| Current | 253 (5.0) | 31 (9.2) | |
| Missing values | 3 (0.1) | 1 (0.3) | |
| Duke Social Support Index tertiles | < 0.001‡ | ||
| Highest | 2259 (44.7) | 30 (9.0) | |
| Middle | 1608 (31.8) | 71 (21.3) | |
| Lowest | 1181 (23.4) | 232 (69.7) | |
| Missing values | 22 (0.4) | 6 (1.8) | |
| Charlson index (weighted), mean (95% CI) | 1.17 (1.12–1.22) | 2.21 (1.94–2.48) | < 0.001§ |
| Missing values | 571 (11.3) | 14 (4.1) | |
Note: CI = confidence interval, GDS-15 = 15-item Geriatric Depression Scale.
*
No clinically significant depression = GDS-15 score < 7; clinically significant depression = GDS-15 score ≥ 7.
†
Unless stated otherwise.
‡
χ2 test.
§
Student t test.