Table 1. Sample characteristics at baseline (1989), stratified by number of symptoms of posttraumatic stress disorder (N = 50,020).
| No Trauma (n = 24,787, 49.6%) |
Trauma, No Symptoms (n = 15,319, 30.6%) |
Trauma, 1–3 Symptoms (n = 4,943, 9.9%) |
Trauma, 4–5 Symptoms (n = 3,001 6.0%) |
Trauma, 6–7 Symptoms (n = 1,978, 3.9%) |
|
|---|---|---|---|---|---|
| Age, yrs (SD) | 34.28 (4.7) | 35.21 (4.5) | 35.34 (4.5) | 35.22 (4.4) | 35.09 (4.4) |
| TV Viewing, hrs/wk (SD) | 8.83 (8.3) | 8.53 (8.1) | 8.56 (8.2) | 8.45 (8.3) | 8.55 (8.7) |
| Race, white (%) | 23,262 (93.9) | 14,305 (93.4) | 4,655 (94.2) | 4,846 (94.8) | 1,863 (94.6) |
| Parental education | |||||
| ≥ College (%) | 5,815 (23.5) | 3,327 (27.7) | 1,126 (22.8) | 667 (22.2) | 489 (24.8) |
| Age 5 somatotype, highest (%) | 1,619 (6.5) | 1,080 (7.1) | 326 (6.6) | 227 (7.6) | 167 (8.5) |
| Age 15 region of residence (%) | |||||
| Northeast (%) | 2,416 (9.8) | 1,651 (10.8) | 607 (12.3) | 355 (77.8) | 267 (13.6) |
| Midwest (%) | 8,980 (36.2) | 5,333 (34.8) | 1,755 (35.5) | 1,048 (34.9) | 632 (32.1) |
| West (%) | 5,572 (22.5) | 3,255 (21.3) | 1,035 (20.9) | 633 (21.1) | 413 (21.0) |
| South (%) | 2,746 (11.1) | 1,832 (12.0) | 599 (12.1) | 398 (13.3) | 269 (13.7) |
| Puerto Rico or Non-US (%) | 418 (1.7) | 262 (1.7) | 74 (1.5) | 45 (1.5) | 27 (1.4) |
| Lifetime depression, 2009 (%) | 5,507 (22.2) | 2,856 (18.6) | 1,466 (29.7) | 1,384 (46.1) | 1,186 (60.2) |
| Physical activity (MET hrs/wk) (SD) |
27.36 (62.4) | 27.21 (64.4) | 26.40 (62.4) | 25.32 (49.2) | 27.06 (62.1) |
Abbreviations: yrs = years; hrs/wk = hours/week
MET = metabolic equivalent task. One metabolic equivalent (MET) is defined as the amount of oxygen consumed while sitting at rest and is equal to 3.5 ml O2 per kg body weight x min.