Table 2.
Adjusteda linear regression models for associations between ambient pollutants and FENO measures β (95% CI)b
| Pollutant | FENO50 | JNO | Calv |
|---|---|---|---|
| Ni | 0.105 (−0.081,0.291) |
0.038 (−0.260,0.337) |
0.256** (0.085,0.426) |
| V | 0.198* (0.046,0.350) |
0.226 (−0.014, 0.467) |
0.178* (0.036,0.319) |
| Zn | −0.003 (−0.237,0.231) |
−0.036 (−0.407,0.336) |
−0.055 (−0.275,0.165) |
| Fe | 0.406* (0.060,0.751) |
0.679* (0.133,1.225) |
0.047 (−0.282,0.376) |
a
Models adjusted for race/ethnicity, sex, cold/flu season, report of cold or respiratory infection the day of the FENO collection, current environmental tobacco smoke exposure (report of a smoker in home), mean ambient NO levels, report of the child eating within 2 hours of the FeNO collection, distance from child's home to central site and NOx 4-day lag
b
Log transformations of outcome and predictor variables require p coefficients be interpreted as percent increases, ie a 1% increase in Ni is associated with a 25.6% increase in Calv
*
p<0.05
**
p<0.01