Table 3.
Adjusted Odds of School Radon Testing, by Radon Zone and School Characteristics, School Health Policies and Practices Study, 2014.
| Model 1 | Model 2 | |||
|---|---|---|---|---|
| Adjusted OR [95% CI]a | p value | Adjusted OR [95% CI]b | p value | |
| Radon zone: Predicted average indoor radon levels | ||||
| Zone 1: >4 pCi/L | 3.5 [1.3, 9.3] | .01 | 3.5 [1.6, 7.7] | .002 |
| Zone 2: 2–4 pCi/L | 2.2 [1.0, 4.7] | .04 | 2.5 [1.3, 4.8] | .006 |
| Zone 3: <2 pCi/L | Ref | Ref | Ref | Ref |
| Region | ||||
| Northeast | 5.2 [1.9, 14.0] | .001 | 4.5 [2.0, 10.2] | < .001 |
| Midwest | 2.4 [1.0, 5.7] | .06 | 2.4 [1.1, 5.4] | .03 |
| South | 1.3 [0.6, 3.0] | .50 | 1.8 [0.9, 3.8] | .11 |
| West | Ref | Ref | Ref | Ref |
| Percentage of minority students | ||||
| 0–32% | 1.5 [0.7, 3.0] | .30 | NA | NA |
| 33–65% | 1.3 [0.5, 3.3] | .61 | NA | NA |
| 66–100% | Ref | Ref | NA | NA |
Note. Variable was not included in the model. OR = odds ratio; CI = confidence interval; pCi/L = picocuries per liter; Ref = referent; NA = not applicable, variable was not included in the model.
a
Controlling for region and percentage of minority students. Because data for percentage of minority students were available for public schools but not available for private schools, this model was conducted among public schools only.
b
Controlling for region. This model includes data from public and private schools.