Table 4.
Adjusted estimates for percent predicted FEV1 and FVC associated with education level stratified by gender
| FEV1 % Predicteda | FVC % Predicteda | ||||
|---|---|---|---|---|---|
| Estimate (95 % CI) | P-value | Estimate (95 % CI) | P-value | ||
| Female | Low | −2.61 (−3.70, −1.52) | <0.01 | −3.63 (−4.67, −2.59) | <0.01 |
| (n = 12,195) | Intermediate | −0.70 (−1.63, 0.23) | 0.14 | −1.16 (−2.05, −0.27) | 0.01 |
| High | Reference | Reference | |||
| Trend test p-value | <0.01 | <0.01 | |||
| Male | Low | −3.66 (−4.63, −2.69) | <0.01 | −5.49 (−6.41, −4.57) | <0.01 |
| (n = 10,683) | Intermediate | −1.06 (−1.87, −0.24) | 0.01 | −1.93 (−2.70, −1.15) | <0.01 |
| High | Reference | Reference | |||
| Trend test p-value | <0.01 | <0.01 | |||
aAdjusted for SHS exposure (yes or no), smoking history (current, former, and never), pack years of smoking, biomass exposure (yes or no), low fruit/vegetable diet (<1/day serving of either fruits or vegetables), mode of transport to work, and occupational category