Table 3.
Multiple linear regression of RAB sex risk score on cocaine and ATS use (n = 197)
| Model Ia | Model IIb | Model IIIc | ||||
|---|---|---|---|---|---|---|
| b (95% CI)d | t (p =) | b (95% CI)d | t (p =) | b (95% CI)d | t (p =) | |
| Current age | − 0.04 (− 0.08; 0.01) | − 1.60 (0.112) | − 0.04 (− 0.09; 0.00) | − 1.87 (0.063) | − 0.04 (− 0.08; 0.02) | − 1.47 (0.142) |
| Sex (male) | − 3.85 (− 4.83; − 2.87) | − 7.72 (< 0.001) | − 3.85 (− 4.85; − 2.86) | − 7.67 (< 0.001) | − 3.86 (− 4.84; − 2.86) | − 7.69 (< 0.001) |
| Race (white) | 0.61 (− 0.42; 1.64) | 1.17 (0.243) | 0.47 (− 0.60; 1.53) | 0.86 (0.390) | 0.57 (− 0.48; 1.61) | 1.07 (0.287) |
| Ethnicity (Latinx) | 0.51 (− 0.49; 1.51) | 1.00 (0.319) | 0.56 (− 0.48; 1.61) | 1.06 (0.289) | 0.53 (− 0.49; 1.54) | 1.02 (0.307) |
| Homelessness | 0.72 (− 0.12; 1.57) | 1.70 (0.091) | 0.82 (− 0.03; 0.78) | 1.90 (0.059) | 0.71 (− 0.13; 1.55) | 1.67 (0.097) |
| Impulsivity | 0.29 (− 0.18; 0.76) | 1.22 (0.225) | 0.30 (− 0.18; 0.78) | 1.24 (0.218) | 0.28 (− 0.21; 0.76) | 1.13 (0.260) |
| Used cocaine (yes) | 1.06 (0.32; 1.79) | 2.83 (0.005) | N/A | 1.05 (0.31; 1.78) | 2.82 (0.005) | |
| Used ATS (yes) | N/A | 0.31 (− 0.90; 1.51) | 0.50 (0.617) | 0.27 (− 0.91; 1.46) | 0.45 (0.652) | |
| Constant | 4.45 (1.72; 7.19) | 3.21 (0.002) | 5.40 (2.79; 8.01) | 4.08 (< 0.000) | 4.41 (1.67; 7.16) | 3.17 (0.002) |
| Model F (p =) | 13.68 (< 0.001) | 13.40 (< 0.001) | 12.07 (< 0.001) | |||
| Model R2 | 0.388 | 0.373 | 0.389 | |||
| Eta2 cocaine | 0.026 | N/A | 0.025 | |||
| Eta2 ATS | N/A | 0.002 | 0.001 | |||
ATS amphetamine type stimulants, CI confidence interval, RAB risk assessment battery, SD standard deviation
aModel I excluded ATS use
bModel II excluded cocaine use
cModel III included both cocaine and ATS use
d95% Confidence interval estimates and tests of significance were based on the robust Huber-White variance estimator