Table 1.
Baseline characteristics based on depression scores in MADT and LSADT
| Variable | CAMDEX total depression score | |||
|---|---|---|---|---|
| Lowest tertile | Middle tertile | Highest tertile | Missing | |
| Number (%) | 2570 (38) | 1962 (29) | 1932 (29) | 250 (4) |
| Age, median (IQR) | 66.6 (60.9–79.2) | 58.7 (51.4–66.7) | 58.0 (52.9–77.6) | 84.5 (80.0–88.5) |
| Women, N (%) | 1312 (51) | 1051 (54) | 1130 (58) | 165 (66) |
| Smoking status, N (%) | ||||
| Never smoker | 931 (36) | 714 (36) | 713 (37) | 106 (42) |
| Former smoker | 778 (30) | 548 (28) | 468 (24) | 85 (34) |
| Current smoker | 861 (34) | 700 (36) | 751 (39) | 59 (24) |
| Alcohol use, N (%) | ||||
| Non-drinkers | 458 (18) | 347 (18) | 485 (25) | 127 (51) |
| Lowest tertile of drinkers | 812 (32) | 601 (31) | 545 (28) | 47 (19) |
| Middle tertile of drinkers | 672 (26) | 509 (26) | 414 (21) | 41 (16) |
| Highest tertile of drinkers | 628 (24) | 505 (26) | 488 (25) | 35 (14) |
| Body mass index, median (IQR) | 25 (22–27) | 25 (22–27) | 24 (22–27) | 23 (20–26) |
| Self-reported hypertension, N (%) | 496 (19) | 334 (17) | 350 (18) | 37 (15) |
| Self-reported diabetes, N (%) | 122 (5) | 94 (5) | 108 (6) | 24 (10) |
| Self-reported depression | 232 (9) | 209 (11) | 385 (20) | 43 (20) |
Based on 4314 Middle Age Danish twins (MADT study) and 2400 twins in the Longitudinal Study of Aging Danish Twins (LSADT study). CAMDEX, Cambridge Mental Disorders of the Elderly Examination; IQR, interquartile range.