Table 4.
MEAN RESIDUAL PULMONARY FUNCTION (*) AND STRATIFICATION BY SMOKING HISTORY (**)
| INADEQUATE CONTROL | ADEQUATE CONTROL | DIFFERENCE IN MEAN RESIDUALS | ||||||
|---|---|---|---|---|---|---|---|---|
| n | Mean | n | Mean | 95% CI | ||||
| LL | HL | p Value | ||||||
| rFEV1 | 352 | -164.9 | 143 | -89.5 | -75.4 | -92.2 | -58.6 | < 0.0001 |
| Smoking History | ||||||||
| Non-smoker | 151 | -137.6 | 64 | -57.1 | -80.5 | -95.9 | -65.1 | < 0.0001 |
| Past | 152 | -181.5 | 58 | -119.3 | -62.2 | -101.2 | -23.0 | 0.0029 |
| Current | 49 | -197.3 | 21 | -105.8 | -91.5 | -173.6 | -9.4 | 0.0194 |
| rFVC | 352 | -247.3 | 143 | -126.1 | -121.2 | -134.1 | -108.4 | < 0.0001 |
| Smoking History | ||||||||
| Non-smoker | 151 | -192.4 | 64 | -130.8 | -61.6 | -74.0 | -49.2 | < 0.0001 |
| Past | 152 | -294.1 | 58 | -136.1 | -158.0 | -191.5 | -124.4 | < 0.0001 |
| Current | 49 | -271.3 | 21 | -83.7 | -187.7 | -245.4 | -129.9 | < 0.0001 |
| rFEV1/FVC | 352 | 1.021 | 143 | 1.008 | 0.013 | 0.009 | 0.018 | < 0.0001 |
| Smoking history | ||||||||
| Non-smoker | 151 | 1.024 | 64 | 1.023 | 0.001 | -0.006 | 0.008 | 0.7473 |
| Past | 152 | 1.023 | 58 | 0.997 | 0.026 | 0.020 | 0.033 | < 0.0001 |
| Current | 49 | 1.007 | 21 | 0.991 | 0.015 | 0.001 | 0.032 | 0.0184 |
(*) Values in bold are mean residuals for FEV1, FVC and FEV1/FVC adjusted for differences in age, height, sex, and smoking history.
(**) Values stratified by smoking history are mean residuals adjusted for differences in age, height, and sex.
CI: Confidence interval. LL: lower limit; HL: higher limit.