TABLE 8.
Parameter estimates and incidence rate ratios of GLMM evaluating effects of time, condition, and time-by-condition interaction on sexual violence perpetration (overall).
Incidence rate ratios (IRRs) | ||||||
---|---|---|---|---|---|---|
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Variable | Estimate | SE | P | Low | IRR | High |
Intercept | −7.37 | 1.48 | <0.001 | _ | _ | _ |
Covariates | ||||||
% free or reduced-price lunch | 0.04 | 0.02 | 0.118 | 0.99 | 1.04 | 1.09 |
% minority students | 0.01 | 0.02 | 0.550 | 0.98 | 1.01 | 1.04 |
School Type (ref: Public) | ||||||
Charter | −1.95 | 1.58 | 0.219 | 0.01 | 0.14 | 3.18 |
Private | 0.31 | 1.23 | 0.803 | 0.12 | 1.36 | 15.31 |
# of students | 0.00 | 0.00 | 0.299 | 1.00 | 1.00 | 1.00 |
Focal predictors | ||||||
Time (ref: Baseline) | ||||||
2 Months | 3.33 | 0.68 | <0.001 | 7.37 | 27.91 | 105.74 |
6 Months | 2.13 | 0.63 | <0.001 | 2.43 | 8.39 | 29.01 |
Condition (ref: Control) | 0.27 | 0.83 | 0.748 | 0.26 | 1.30 | 6.60 |
Interactions | ||||||
2 Months × Condition | −1.38 | 0.91 | 0.130 | 0.04 | 0.25 | 1.50 |
6 Months × Condition | 0.22 | 0.86 | 0.801 | 0.23 | 1.24 | 6.64 |
Simple slopes (Condition) | ||||||
Condition @ 2 Months | −1.12 | 0.87 | 0.198 | 0.06 | 0.33 | 1.80 |
Condition @ 6 Months | 0.48 | 0.84 | 0.565 | 0.31 | 1.62 | 8.35 |
Simple slopes (Time) | ||||||
2 Months @ Intervention | 1.94 | 0.61 | 0.001 | 2.13 | 6.99 | 22.89 |
6 Months @ Intervention | 2.34 | 0.59 | <0.001 | 3.29 | 10.41 | 32.97 |
Abbreviation: GLMM, generalized linear mixed model.