Table. Participant Characteristics.
| Sample Variable | No. of TSEs Stratified by Sex | |||||
|---|---|---|---|---|---|---|
| Male | Female | |||||
| 0 | 1 | ≥2 | 0 | 1 | ≥2 | |
| Total Sample | ||||||
| No. of participants | 2654 | 988 | 950 | 2735 | 1195 | 976 |
| Age, mean (SD), y | 13.01 (3.49) | 14.18 (3.54) | 15.66 (3.44) | 13.79 (3.66) | 14.87 (3.4) | 16.25 (3.19) |
| No. (%) EA | 1690 (63.7) | 588 (59.5) | 405 (42.6) | 1626 (59.5) | 634 (53.1) | 355 (36.4) |
| No. (%) AA | 701 (26.4) | 280 (28.3) | 444 (46.7) | 795 (29.1) | 408 (34.1) | 496 (50.8) |
| No. (%) other | 263 (9.9) | 120 (12.1) | 101 (10.6) | 314 (11.5) | 153 (12.8) | 125 (12.8) |
| Parent educational attainment, mean (SD), y | 14.65 (2.36) | 14.30 (2.27) | 13.71 (2.09) | 14.52 (2.34) | 14.11 (2.27) | 13.47 (2.07) |
| SES, mean (SD)a | 0.16 (0.94) | 0.07 (0.97) | −0.35 (1.05) | 0.12 (0.97) | −0.07 (0.99) | −0.44 (1.03) |
| Imaging Sample | ||||||
| No. of participants | 345 | 155 | 165 | 378 | 189 | 163 |
| Age, mean (SD), y | 13.52 (3.45) | 14.22 (3.31) | 16 (3.02) | 13.94 (3.71) | 15.14 (3.1) | 16.09 (2.81) |
| No. (%) EA | 181 (52.5) | 91 (58.7) | 50 (30.3) | 176 (46.6) | 71 (37.6) | 50 (30.7) |
| No. (%) AA | 112 (32.5) | 51 (32.9) | 97 (58.8) | 151 (39.9) | 93 (49.2) | 102 (62.6) |
| No. (%) other | 52 (15.1) | 13 (8.4) | 18 (10.9) | 51 (13.5) | 25 (13.2) | 11 (6.7) |
| Parent educational attainment, mean (SD), y | 14.28 (2.47) | 14.12 (2.13) | 13.69 (2.18) | 14.23 (2.31) | 13.69 (2.19) | 13.33 (2.04) |
| SES, mean (SD)a | −0.05 (1.00) | −0.04 (0.95) | −0.49 (1.06) | −0.13 (1.02) | −0.41 (1.06) | −0.64 (1.02) |
| Mean RMS | 0.07 (0.04) | 0.07 (0.04) | 0.07 (0.04) | 0.07 (0.04) | 0.06 (0.04) | 0.06 (0.04) |
Abbreviations: AA, African ancestry; EA, European ancestry; RMS, root mean square motion estimate; SES, socioeconomic status index in SD units; TSE, traumatic stressful event.
a
Indicates factor score calculated on data ascertained using census-based geocoding.