Table 1.
Summary of all variables that served as candidate predictors (base-learners) in the initial component-wise gradient boosting (mboost) model.
| Predictor variable | Frequency (%) |
|---|---|
| Sex | Male = 36 (75.00); Female = 12 (25.00) |
| Ethnicity | AA = 37 (77.08); Asian = 2 (4.17); Cauc = 3 (8.33); Hisp = 4 (10.42) |
| Smoking Status | No = 28 (58.33); Yes = 20 (41.67) |
| FKBP5_13 | C/C = 22 (45.83); C/T = 18 (37.50); T/T = 8 (16.67) |
| FKBP5_92 | C/C = 18 (37.50); C/T = 21 (43.75); T/T = 9 (22.92) |
| FKBP5_94 | C/C = 16 (45.83); C/T = 21 (37.50); T/T = 11 (16.67) |
| Mean (SD) | Median (IQR) | |
| Age | 31.69 (7.60) | 31 (13.00) |
| Education | 13.84 (4.29) | 12 (2.00) |
| IPAS—Premeditated Aggression | 20.96 (5.36) | 22 (6.50) |
| IPAS—Impulsive Aggression | 27.66 (6.59) | 28 (9.00) |
| CTQ—Emotional Abuse | 8.29 (3.48) | 7.5 (4.25) |
| CTQ—Physical Abuse | 8.24 (3.16) | 8 (3.00) |
| CTQ—Sexual Abuse | 6.22 (3.63) | 5 (0.00) |
| CTQ—Emotional Neglect | 8.73 (3.64) | 6 (3.00) |
| CTQ—Physical Neglect | 6.69 (1.94) | 5 (3.00) |
| SRP-III—Interpersonal Manipulation | 38.62 (9.88) | 40 (14.50) |
| SRP-III—Callous Affect | 41.98 (8.12) | 42 (10.50) |
| SRP-III—Erratic Lifestyle | 42.87 (7.35) | 42 (10.00) |
| SRP-III—Criminal Tendencies | 36.36 (10.86) | 36 (14.00) |
| Shipley II | 200.27 (26.36) | 199 (40.00) |
| BPAQ—Total Score | 64.04 (19.78) | 59 (22.50) |
Frequencies (%) and mean (SD) are provided for each predictor.