Table 5.
Final proportional hazards regression results for misconduct-related attrition.
| Model Fit |
Step 3 Predictor Statistics |
|||||||
|---|---|---|---|---|---|---|---|---|
| Model | df | −2LL | Δ-2LL | Predictor | β | HR | HR 95% LL | HR 95% UL |
| Step 1 | 1 | 118,698.07 | — | AFQT | −0.263 | 0.769 | 0.717 | 0.825 |
| Step 2 | 11 | 118,119.08 | 578.99 | Achievement | −0.082 | 0.921 | 0.894 | 0.950 |
| Step 3 | 13 | 118,101.62 | 17.46 | Adjustment | 0.101 | 1.107 | 1.076 | 1.139 |
| Attention Seeking | 0.120 | 1.128 | 1.095 | 1.162 | ||||
| Dominance | 0.054 | 1.055 | 1.023 | 1.088 | ||||
| Even-tempered | 0.034 | 1.035 | 0.964 | 1.111 | ||||
| Intellectual Efficiency | 0.134 | 1.143 | 1.107 | 1.180 | ||||
| Non-Delinquency | −0.143 | 0.867 | 0.842 | 0.892 | ||||
| Physical Conditioning | 0.043 | 1.044 | 1.014 | 1.074 | ||||
| Sociability | 0.080 | 1.083 | 1.052 | 1.116 | ||||
| Tolerance | −0.070 | 0.932 | 0.906 | 0.959 | ||||
| Time x AFQT | −0.005 | 0.995 | 0.993 | 0.998 | ||||
| Time x Even-tempered | −0.003 | 0.997 | 0.994 | 1.000 | ||||
n = 104,129. −2LL = − 2 log likelihood. β = standardized parameter. HR = Hazard ratio. 95% LL = 95% confidence interval lower limit of the hazard ratio. 95% UL = 95% confidence interval upper limit of the hazard ratio. The Step 1 model includes the AFQT only. The Step 2 model adds the TAPAS scale main effects to the Step 1 model. The Step 3 model adds the interaction terms (i.e., time-varying effects) to the Step 2 model. All models are significant, p < .05. The Step 2 and 3 models resulted in significant change in model fit compared to the previous steps based on a Likelihood Ratio χ2 test, p< .05. Bolded values indicate significant predictor effects, p < .05.