Table 4. Pearson (Partial) Correlation Analysis in Other Countries (N = 7,514).
| Changes in PF-10 score | mMRC | Number of exacerbations |
|---|---|---|
| Nothing | ||
| Correlation coefficient | 0.31 | 0.1181 |
| P-value | < 0.00 | < 0.0001 |
| Age (< 65 vs. ≥ 65) | ||
| Correlation coefficient | 0.32 | 0.1183 |
| P-value | < 0.00 | < 0.0001 |
| Concomitant disease (yes vs. no) | ||
| Correlation coefficient | 0.32 | 0.1193 |
| P-value | < 0.00 | < 0.0001 |
| Age (< 65 vs. ≥ 65) and concomitant disease (yes vs. no) | ||
| Correlation coefficient | 0.32 | 0.1197 |
| P-value | < 0.00 | < 0.0001 |
PF-10: 10-question physical functioning questionnaire; mMRC: modified Medical Research Council questionnaire.