Table 1.
Demographic and clinical characteristics of the sample
| Low PCL-R group | Mid PCL-R group | High PCL-R group | Effect sizes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M | s.d. | n | % | M | s.d. | n | % | M | s.d. | n | % | X 2 | F | P | ||
| Gender (% male) | 23 | 87 | 29 | 75.9 | 15 | 93.3 | 2.49 | ns | ||||||||
| Age | 31.48 | 10.28 | 35.38 | 7.78 | 33.47 | 9.45 | 1.19 | ns | ||||||||
| PCL-R total | 14.16 | 4.12 | 23.62 | 2.98 | 31.98 | 1.56 | 145.40 | <0.001 | ||||||||
| Factor 1 | 4.52 | 1.73 | 8.33 | 2.21 | 12.40 | 1.92 | 71.98 | <0.001 | ||||||||
| Factor 2 | 8.66 | 3.35 | 13.80 | 2.66 | 17.07 | 1.03 | 48.53 | <0.001 | ||||||||
| Composite drug score | 14.91 | 12.15 | 28.93 | 17.10 | 27.20 | 18.03 | 5.51 | 0.006 | ||||||||
| Alcohol use over threshold | 4.70 | 8.48 | 5.41 | 6.65 | 7.47 | 9.37 | 0.57 | ns | ||||||||
| SCID diagnoses | ||||||||||||||||
| Psychotic disorders | 0 | 0 | 0 | 0 | 2 | 13.3 | 7.15 | 0.03 | ||||||||
| Mood disorders | 12 | 52.2 | 16 | 55.2 | 8 | 53.3 | 0.05 | ns | ||||||||
| Substance Use Disorders | 21 | 91.3 | 29 | 100 | 15 | 100 | 3.94 | ns | ||||||||
Note: Alcohol use over threshold was calculated as the total number of years that an individual consumed five or more drinks of alcohol three or more times per week; Composite drug score was calculated as the total number of years an individual regularly used any of the following: heroin, crack/cocaine, methamphetamines, opioids, other amphetamines, methadone, cannabis, hallucinogens or inhalants.