From: Analysis of comorbid factors that increase the COPD assessment test scores
CAT item | Comorbidity | p value | Cumulative R2 |
---|---|---|---|
Cough | Â | Â | Â |
 | None |  |  |
Phlegm | Â | Â | Â |
 | None |  |  |
Chest tightness | Â | Â | Â |
 | GERD (FSSG ≥ 8) | <0.001 | 0.0901 |
 | Depression (HAD-D ≥ 11) | 0.0033 | 0.123 |
Breathlessness | Â | Â | Â |
 | GERD (FSSG ≥ 8) | <0.001 | 0.0705 |
 | Osteoporosis | 0.0355 | 0.0876 |
Activity limitation | Â | Â | Â |
 | GERD (FSSG ≥ 8) | <0.001 | 0.0926 |
 | Depression (HAD-D ≥ 11) | <0.001 | 0.1452 |
 | Arrhythmia | 0.0026 | 0.1773 |
 | Osteoporosis | 0.0222 | 0.1954 |
Confidence to leave home | Â | Â | Â |
 | GERD (FSSG ≥ 8) | <0.001 | 0.0631 |
 | Depression (HAD-D ≥ 11) | <0.001 | 0.107 |
 | Osteoporosis | <0.001 | 0.1337 |
 | Hypertension | 0.0109 | 0.1571 |
 | Arrhythmia | 0.0445 | 0.1714 |
Sleep | Â | Â | Â |
 | Depression (HAD-D ≥ 11) | <0.001 | 0.0807 |
 | GERD (FSSG ≥ 8) | 0.0033 | 0.1134 |
 | Anxiety (HAD-A ≥ 11) | 0.01 | 0.1378 |
 | Arrhythmia | 0.0404 | 0.153 |
Energy | Â | Â | Â |
 | GERD (FSSG ≥ 8) | <0.001 | 0.1191 |
 | Depression (HAD-D ≥ 11) | <0.001 | 0.1972 |
 | Arrhythmia | <0.001 | 0.2487 |
 | Anxiety (HAD-A ≥ 11) | 0.0333 | 0.263 |