Table 3.
Logistic regression models for CAFAS school, home, and community domain scores with BRI and MI as predictor variables
| BRI Model | MI Model | Combined Model | |||||
|---|---|---|---|---|---|---|---|
| Domain | Variable | Odds Ratio (95% CI) | P | Odds Ratio (95% CI) | P | Odds Ratio (95% CI) | P |
| School | Sex | 2.44 (1.04–5.73) | .04 | 3.42 (1.34–8.72) | .01 | 3.39 (1.31–8.76) | .01 |
| Race | 0.74 (0.26–2.10) | .57 | 1.06 (0.38–2.96) | .92 | 0.93 (0.32–2.68) | .89 | |
| SES | 1.69 (0.71–4.02) | .23 | 2.22 (0.94–5.22) | .07 | 1.81 (0.74–4.41) | .19 | |
| Injury severity | 1.32 (0.55–3.17) | .53 | 1.18 (0.50–2.77) | .71 | 1.28 (0.53–3.08) | .58 | |
| PSI | 1.01 (0.98–1.03) | .70 | 1.01 (0.98–1.04) | .62 | 1.01 (0.98–1.04) | .64 | |
| Memory | 1.01 (0.98–1.05) | .44 | 1.02 (0.99–1.06) | .21 | 1.02 (0.98–1.06) | .25 | |
| BRI | 3.50 (1.41–8.69) | <.01 | NA | NA | 2.15 (0.78–5.93) | .14 | |
| MI | NA | NA | 3.93 (1.58–9.79) | <.01 | 2.96 (1.06–8.30) | .04 | |
| Home | Sex | 1.84 (0.77–4.37) | .17 | 2.25 (0.91–5.56) | .08 | 2.16 (0.87–5.37) | .10 |
| Race | 1.03 (0.34–3.14) | .97 | 1.25 (0.41–3.84) | .69 | 1.14 (0.37–3.56) | .82 | |
| SES | 1.30 (0.52–3.21) | .57 | 1.46 (0.59–3.57) | .41 | 1.33 (0.53–3.31) | .55 | |
| Injury severity | 1.18 (0.47–2.95) | .72 | 1.22 (0.49–3.04) | .67 | 1.18 (0.47–2.98) | .73 | |
| PSI | 0.97 (0.95–1.00) | .07 | 0.97 (0.94–1.00) | .05 | 0.97 (0.95–1.00) | .07 | |
| Memory | 1.03 (0.99–1.07) | .11 | 1.03 (0.99–1.07) | .10 | 1.04 (1.00–1.08) | .08 | |
| BRI | 3.08 (1.05–9.02) | .04 | NA | NA | 2.20 (0.66–7.28) | .20 | |
| MI | NA | NA | 2.86 (1.07–7.67) | .04 | 1.96 (0.65–5.93) | .23 | |
| Community | Sex | 2.47 (0.53–11.47) | .25 | 8.16 (1.21–55.23) | .03 | 7.35 (1.08–50.26) | .04 |
| Race* | NA | NA | NA | NA | NA | NA | |
| SES | 0.75 (0.16–3.41) | .70 | 1.18 (0.26–5.28) | .83 | 1.03 (0.21–4.96) | .98 | |
| Injury severity | 0.54 (0.13–2.31) | .41 | 0.47 (0.11–2.08) | .32 | 0.52 (0.11–2.35) | .39 | |
| PSI | 1.02 (0.97–1.07) | .52 | 1.03 (0.98–1.08) | .33 | 1.02 (0.974–1.08) | .36 | |
| Memory | 1.05 (0.98–1.12) | .21 | 1.07 (1.00–1.15) | .06 | 1.07 (0.99–1.12) | .07 | |
| BRI | 5.38 (1.34–21.64) | .02 | NA | NA | 1.68 (0.33–8.57) | .53 | |
| MI | NA | NA | 17.53 (3.06–100.56) | <.01 | 13.28 (1.94–90.87) | <.01 | |
Abbreviations: NA, not applicable; SES, socioeconomic status estimated by primary caregiver education.
*
Race was not used as a covariate in the community analysis, because the maximum likelihood ratio did not exist for this variable because of the small percentage (9.1%) of individuals with community impairment on the CAFAS in the study population.