Table 9. Multiple Linear Regression Models to Estimate the Relationship of percent (%) predicted spirometric values (FVC and FEV1) with scoring of radiographic abnormalities among patients with cured pulmonary tuberculosis.
| Variables |
Model for percent predicted FVC*
|
Model for percent predicted FEV1*
|
||
|---|---|---|---|---|
| Parameter estimates (95% CI) | P value | Parameter estimates (95% CI) | P value | |
| Scoring of radiographic abnormalities* | -2.48 (-3.45 to -1.50) | 0.000 | -2.92 (-3.87 to -1.97) | 0.000 |
| Smoking status (former vs never) | -0.27 (-11.28 to 10.74) | 0.961 | 1.82 (-8.82 to 12.46) | 0.735 |
| Pack-years of smoking | -0.31(-2.76 to 2.14) | 0.804 | -0.98 (-3.34 to 1.40) | 0.417 |
| MRC Dyspnea Scale | ||||
| MRC 0 | Reference | Reference | ||
| MRC 1 | -1.16 (-9.35 to 7.03) | 0.517 | -2.39 (-10.30 to 5.53) | 0.551 |
| MRC 2 | -2.42 (-14.36 to 9.52) | 0.689 | -3.92 (-15.45 to -7.62) | 0.503 |
| MRC 3 | -23.84 (-46.09 to 0.88) | 0.042 | -16.10 (-38.29 to 6.08) | 0.153 |
| MRC 4 | -24.18 (-68.32 to 19.96) | 0.280 | -13.29 (-55.94 to 29.36) | 0.538 |
| Oxigen pulse saturation | 0.04 (-1.14 to 1.06) | 0.943 | 0.26 (0.80 to 1.33) | 0.619 |
| Adjusted R2 | 0.24 | 0.30 | ||
*
Multivariate linear regression model.
CI: Confidence interval