Table 8. Multiple linear regression models to estimate the relationship of absolute spirometric values (FVC and FEV1) with scoring of radiographic abnormalities among patients with cured pulmonary tuberculosis.
| Variables |
Model for FVC(L)*
|
Model for FEV1 (L)*
|
||
|---|---|---|---|---|
| Parameter estimates (95% CI) | P value | Parameter estimates (95% CI) | P value | |
| Scoring of radiographic abnormalities* | -0.07 (-0.01 to -0.04) | 0.000 | -0.07 (-0.10 to -0.05) | 0.000 |
| Age | -0.01 (-0.02 to -0.00) | 0.009 | -0.01 (-0.02 to -0.01) | 0.002 |
| Gender (Female) | -0.67 (-1.01 to -0.33) | 0.000 | -0.40 (-0.70 to -0.11) | 0.008 |
| Height | 0.03 (0.01 to 0.04) | 0.013 | 0.02 (0.01 to 0.04) | 0.006 |
| Smoking status (former vs. never) | 0.19 (-0.12 to 0.50) | 0.227 | 0.12 (-0.15 to 0.39) | 0.385 |
| Pack-years of smoking | 0.00 (-0.07 to 0.07) | 0.065 | 0.01 (-0.07 to 0.04) | 0.638 |
| MRC Dyspnea Scale | ||||
| MRC 0 | Reference | Reference | ||
| MRC 1 | -0.13 (-0.35 to 0.10) | 0.262 | -0.17 (-0.36 to 0.03) | 0.094 |
| MRC 2 | -0.61 (-0.95 to -0.28) | 0.000 | -0.44 (-0.73 to -0.15) | 0.004 |
| MRC 3 | -0.96 (-1.60 to -0.33) | 0.003 | -0.58 (-1.14 to -0.03) | 0.040 |
| MRC 4 | -0.48 (-1.69 to -0.73) | 0.431 | -0.06 (-1.12 to 1.00) | 0.918 |
| Oxygen pulse saturation | 0.02 (-0.01 to 0.05) | 0.138 | 0.03 (0.00 to 0.05) | 0.039 |
| Adjusted R2 | 0.64 | 0.62 | ||
*
Multivariate linear regression model.
CI: Confidence interval