Table 3.
Number of participants and the percentage encompassed in each predictor category across trajectories and in the pooled ICPP dataset.
| Variable | Low | Moderate | Remitting | High | Delayed | ICPP | χ2df; p-value |
|---|---|---|---|---|---|---|---|
| Age Quartile | χ212=61.46 | ||||||
| <27 | 501 (25.2%) | 29 (14%) | 145 (27.8%) | 37 (18.6%) | 42 (24.9%) | 754 (24.5%) | p < .001 |
| 27–37 | 476 (24%) | 60 (29%) | 158 (30.3%) | 59 (29.6%) | 36 (21.3%) | 789 (25.6%) | |
| 38–48 | 451 (22.7%) | 58 (28%) | 114 (21.9%) | 65 (32.7%) | 58 (34.3%) | 746 (24.2%) | |
| >48 | 559 (28.1%) | 60 (29%) | 104 (20%) | 38 (19.1%) | 33 (19.5%) | 794 (25.8%) | |
| Gender | χ24=112.29 | ||||||
| Male | 1400 (70.5%) | 110 (53.1%) | 258 (49.5%) | 98 (49.2%) | 116 (68.6%) | 1982 (64.3%) | p < .001 |
| Female | 587 (29.5%) | 97 (46.9%) | 263 (50.5%) | 101 (50.8%) | 53 (31.4%) | 1101 (35.7%) | |
| Race | χ28=64.09 | ||||||
| White | 1491 (75%) | 175 (84.5%) | 441 (84.6%) | 147 (73.9%) | 114 (67.5%) | 2368 (76.8%) | p < .001 |
| Non-White | 233 (11.7%) | 26 (12.6%) | 34 (6.5%) | 21 (10.6%) | 16 (9.5%) | 330 (10.7%) | |
| Missing | 263 (13.2%) | 6 (2.9%) | 46 (8.8%) | 31 (15.6%) | 39 (23.1%) | 385 (12.5%) | |
| Education | χ28=74.02 | ||||||
| Secondary or Greater | 1542 (77.6%) | 172 (83.1%) | 404 (77.5%) | 118 (59.3%) | 124 (73.4%) | 2360 (76.5%) | p < .001 |
| Less than Secondary | 361 (18.2%) | 33 (15.9%) | 72 (13.8%) | 55 (27.6%) | 26 (15.4%) | 547 (17.7%) | |
| Missing | 84 (4.2%) | 2 (1%) | 45 (8.6%) | 26 (13.1%) | 19 (11.2%) | 176 (5.7%) | |
| Marital Status | χ28=54.73 | ||||||
| Married/living with partner | 953 (48%) | 107 (51.7%) | 222 (42.6%) | 90 (45.2%) | 72 (42.6%) | 1444 (46.8%) | p < .001 |
| Single/not living with partner | 953 (48%) | 100 (48.3%) | 252 (48.4%) | 88 (44.2%) | 83 (49.1%) | 1476 (47.9%) | |
| Missing | 81 (4.1%) | 0 (0%) | 47 (9%) | 21 (10.6%) | 14 (8.3%) | 163 (5.3%) | |
| Prior Trauma | χ212=156.09 | ||||||
| No prior trauma | 297 (14.9%) | 18 (8.7%) | 115 (22.1%) | 19 (9.5%) | 22 (13%) | 471 (15.3%) | p <.001 |
| Prior non-interpersonal trauma | 700 (35.2%) | 70 (33.8%) | 150 (28.8%) | 45 (22.6%) | 31 (18.3%) | 996 (32.3%) | |
| Prior interpersonal trauma | 848 (42.7%) | 119 (57.5%) | 182 (34.9%) | 111 (55.8%) | 110 (65.1%) | 1370 (44.4%) | |
| Missing | 142 (7.1%) | 0 (0%) | 74 (14.2%) | 24 (12.1%) | 6 (3.6%) | 246 (8%) | |
| Trauma Type | χ28=124.83 | ||||||
| MVA | 1449 (72.9%) | 153 (73.9%) | 415 (79.7%) | 143 (71.9%) | 129 (76.3%) | 2289 (74.2%) | p <.001 |
| Other accidents | 472 (23.8%) | 41 (19.8%) | 54 (10.4%) | 22 (11.1%) | 26 (15.4%) | 615 (19.9%) | |
| Assaults (intentional harm) | 66 (3.3%) | 13 (6.3%) | 52 (10%) | 34 (17.1%) | 14 (8.3%) | 179 (5.8%) | |
Note. df = degrees of freedom