Table 2.
Univariate and multivariate regression analysis of LPA
| Variables | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| B | 95% CI | p-value | β | p-value | VIF | |
| Standardized partial regression coefficient (β) was adjusted for age and FEV1%pred. | ||||||
| LPA, low-intensity physical activity; B, regression coefficient; CI, confidence interval; β, standardized partial regression coefficient; VIF, variance inflation factor; BMI, body mass index; FFMI, fat-free mass index; mMRC, modified Medical Research Council; CCI, Charlson comorbidity index; FEV1, forced expiratory volume in one second; QF, quadriceps femoris muscle force; PImax, maximum inspiratory mouth pressure; 6MWD, six-minute walk distance; CAT, chronic obstructive pulmonary disease assessment test | ||||||
| Age | –1.339 | –2.014, –0.665 | <0.001 | – | – | – |
| BMI | 0.371 | –0.817, 1.560 | 0.536 | 0.091 | 0.428 | 1.007 |
| FFMI | –0.374 | –2.108, 1.361 | 0.669 | 0.021 | 0.864 | 1.028 |
| mMRC | –0.6532 | –10.135, –2.928 | 0.001 | –0.292 | 0.014 | 1.271 |
| CCI | –0.980 | –2.825, 0.866 | 0.294 | –0.066 | 0.541 | 1.027 |
| FEV1%pred | 0.064 | –0.103, 0.231 | 0.447 | – | – | – |
| Hand grip | 0.757 | 0.277, 1.237 | 0.002 | 0.216 | 0.063 | 1.136 |
| QF | 0.397 | 0.088, 0.706 | 0.012 | 0.207 | 0.063 | 1.065 |
| PImax | 0.286 | 0.165, 0.407 | <0.001 | 0.367 | 0.004 | 1.324 |
| 6MWD | 0.055 | 0.027, 0.083 | <0.001 | 0.359 | 0.006 | 1.404 |
| Gait speed | 41.351 | 24.939, 57.764 | <0.001 | 0.392 | 0.001 | 1.286 |
| CAT | –0.457 | –0.936, 0.022 | 0.061 | –0.160 | 0.141 | 1.041 |