Table 4.
Relationship between census tract characteristics and SARS-CoV-2 positivity rate in children using negative binomial regression
| Variables | Univariable incident rate ratio | 95% CI | p | Multivariable incident rate ratio | 95% CI | p |
|---|---|---|---|---|---|---|
| Time period 1 | ||||||
| Non-White | 1.010 | 1.006–1.013 | <0.0001 | 0.998 | 0.992–1.005 | 0.572 |
| Internationally born | 1.031 | 1.023–1.038 | <0.0001 | 1.040 | 1.025–1.055 | <0.0001 |
| Below poverty level | 1.010 | 1.001–1.019 | 0.0039 | 1.000 | 0.991–1.010 | 0.982 |
| Crowding | 1.009 | 1.000–1.019 | 0.054 | 0.989 | 0.977–1.001 | 0.073 |
| Time period 2 | ||||||
| Non-White | 1.000 | 0.99–1.002 | 0.72 | 0.995 | 0.989–0.999 | 0.031 |
| Internationally born | 1.006 | 0.999–1.013 | 0.060 | 1.028 | 1.016–1.041 | <0.0001 |
| Below poverty level | 0.990 | 0.984–0.997 | 0.0047 | 0.990 | 0.983–0.997 | 0.0095 |
| Crowding | 0.989 | 0.982–0.997 | 0.008 | 0.985 | 0.975–0.994 | 0.0015 |
| Time period 3 | ||||||
| Non-White | 1.000 | 0.998–1.003 | 0.811 | 1.001 | 0.996–1.006 | 0.598 |
| Internationally born | 1.002 | 0.996–1.009 | 0.534 | 1.004 | 0.992–1.016 | 0.532 |
| Below poverty level | 0.993 | 0.986–0.999 | 0.031 | 0.991 | 0.983–0.998 | 0.018 |
| Crowding | 0.997 | 0.989–1.004 | 0.434 | 0.996 | 0.98–1.005 | 0.394 |
| All time periods | ||||||
| Non-White | 1.002 | 1.000–1.005 | 0.039 | 0.997 | 0.99–1.002 | 0.326 |
| Internationally born | 1.012 | 1.006–1.018 | <0.0001 | 1.024 | 1.014–1.035 | <0.0001 |
| Below poverty level | 0.992 | 0.986–0.998 | 0.0048 | 0.988 | 0.982–0.994 | 0.0002 |
| Crowding | 0.997 | 0.990–1.003 | 0.386 | 0.992 | 0.985–0.999 | 0.022 |
Bold indicates p<0.05.