Table 3.
Results of Cox regression analysis to identify factors that independently predict mortality, including completion of a pulmonary rehabilitation program
| B | Exponential (95% CI) for B | p-value | |
|---|---|---|---|
| Age at assessment# | <0.001 | 1.000 (1.00) | <0.001** |
| Pack years smoked | 0.002 | 1.002 (0.909–1.007) | 0.346 |
| Gender | 0.237 | 1.267 (0.998–1.609) | 0.052 |
| MRC grade (pre-PR) | 0.193 | 1.213 (1.066–1.381) | 0.003* |
| BMI | −0.023 | 0.977 (0.957–0.999) | 0.036* |
| ISWT (pre-PR) | −0.003 | 0.997 (0.996–0.998) | <0.001** |
| % predicted FEV1 | −0.010 | 0.990 (0.979–1.002) | 0.103 |
| Home oxygen use | −0.303 | 0.738 (0.558–0.978) | 0.034* |
| Completion of PR | 0.455 | 1.560 (1.238–1.967) | <0.001** |
Note:
#
Age at assessment as a time dependent covariable,
*
significant at p<0.05,
**
significant at p<0.001.
Abbreviations: MRC, Medical Research Council; PR, pulmonary rehabilitation; BMI, body mass index; ISWT, incremental shuttle walking test.