Table 6.
Variable | PM10 μg m−3 | PM2.5 μg m−3 | Endotoxin EU m−3 | |||
---|---|---|---|---|---|---|
β | P | β | P | β | P | |
Intercept | 0.853 | <0.001 | 0.364 | 0.051 | −1.010 | <0.001 |
Indoor relative humidity (%) | 0.004 | 0.003 | 0.009 | <0.001 | NS | |
Indoor CO2 concentration (ppm) | NS | NS | NS | |||
Log outdoor PM10 | 0.296 | 0.007 | — | — | ||
Log outdoor PM2.5 | — | 0.667 | 0.003 | — | ||
Log outdoor endotoxin | — | — | 0.282 | <0.001 | ||
Home cleanliness | 0.016 | NS | 0.001 | |||
Low | 0.134 | 0.006 | 0.311 | <0.001 | ||
Medium | 0.090 | 0.034 | 0.198 | 0.016 | ||
High | Reference | Reference | ||||
Indoor dog and/or cat | NS | NS | NS | |||
Smoking inside home | 0.203 | 0.002 | 0.273 | <0.001 | −0.300 | 0.035 |
Gas stove | NS | NS | NS | |||
Gas furnace | NS | 0.105 | 0.021 | NS | ||
No central air conditioning | NS | 0.145 | 0.003 | NS | ||
Season | NS | 0.008 | NS | |||
Winter | 0.104 | 0.174 | ||||
Spring | 0.208 | <0.001 | ||||
Summer | 0.060 | 0.267 | ||||
Autumn | Reference | |||||
Agricultural household | NS | NS | NS | |||
Home located on un-paved road | NS | NS | NS | |||
Grain storage bins on property | NS | NS | 0.201 | 0.006 | ||
Non-confined cattle or swine raised on property | NS | NS | NS | |||
Swine confinement on property | NS | NS | NS |
NS variable’s overall p > 0.05; — variable not included in analysis