Table 2.
Univariate and multivariate results for negative binomial regression modeling of neighborhood pedestrian injury risk by census block group (n=653)
| Variable | Unadjusted | Adjusted* | ||||
|---|---|---|---|---|---|---|
| RR | 95% CI | p-value | RR | 95% CI | p-value | |
| Alcohol outlet count (min: 0 max: 32) |
1.211 | 1.157, 1.273 | <0.001 | 1.142 | 1.099, 1.192 | <0.001 |
| Population density (per square mile in 1,000 residents) (min: 0 max: 95.16) |
0.985 | 0.975, 0.995 | 0.0122 | 0.979 | 0.970, 0.989 | <0.001 |
| Percent of all lots that are vacant (%) (min: 0% max: 49.53%) |
1.020 | 1.010, 1.030 | <0.001 | 1.016 | 1.007, 1.026 | 0.003 |
| Median household income (in $1,000s) (min: 0 max: 224.43) |
0.992 | 0.988, 0.996 | <0.001 | 0.991 | 0.988, 0.995 | <0.001 |
| Mean daily traffic volume (in 1,000 vehicles) (spatial lag of traffic) (min: 0.07 max: 33.34) |
1.100 | 1.065, 1.138 | <0.001 | 1.076 | 1.059, 1.126 | <0.001 |
| Walk Score (range: 0–100) |
1.028 | 1.022, 1.035 | <0.001 | 1.018 | 1.011, 1.025 | <0.001 |
| Physical disorder (range: 0–12) |
1.045 | 0.995, 1.096 | 0.144 | -- | ||
| Social activity (range: 0–6) |
0.985 | 0.814, 1.192 | 0.893 | -- | ||
| Roadway infrastructure (range: 0–8) |
0.890 | 0.524, 1.513 | 0.713 | -- | ||
| Intersection infrastructure (range: 0–21) |
1.174 | 1.122, 1.230 | <0.001 | -- | ||
| Distance from downtown (miles) (min: 0 max: 7.5) |
0.792 | 0.749, 0.837 | <0.001 | -- | ||
*
Adjusted for other covariates in the column
Final model fit statistics: AIC=1898; Residual Moran’s I=0.0225, p=0.137