Correlations between eating assessment tool (EAT-10), tongue strength (IOPI), respiratory rate (RR) by spirometry, body mass index (BMI), timed water swallow test (TWST) and test of mastication and swallowing of solids (TOMASS) variables for the COPD and control groups
| COPD | Controls | |||
| R (95% CI) | p-value | R (95% CI) | p-value | |
| EAT-10 | ||||
| BMI kg·m−2 | −0.014 (−0.489–0.468) | 0.957 | −0.180 (−0.596–0.312) | 0.462 |
| TWST | ||||
| Total time s | 0.156 (−0.364–0.602) | 0.546 | 0.115 (−0.371–0.551) | 0.639 |
| Number of swallows | 0.014 (−0.470–0.491) | 0.957 | 0.367 (−0.105–0.704) | 0.123 |
| TOMASS | ||||
| Number of swallows | 0.557 (0.088–0.823) | 0.022* | −0.046 (−0.501–0.430) | 0.852 |
| Total time s | 0.218 (−0.308–0.641) | 0.399 | −0.043 (−0.500–0.431) | 0.861 |
| FEV1/FVC ratio % | 0.461 (−0.023–0.770) | 0.054 | −0.034 (−0.492–0.438) | 0.889 |
| FEV1 L | 0.057 (−0.433–0.521) | 0.823 | 0.119 (−0.367–0.554) | 0.627 |
| FEV1 % pred | −0.147 (−0.584–0.357) | 0.561 | 0.366 (−0.120–0.711) | 0.123 |
| IOPI | ||||
| BMI kg·m−2 | −0.436 (−0.773–0.092) | 0.092 | 0.233 (−0.276–0.640) | 0.352 |
| TWST | ||||
| Total time s | 0.268 (−0.259–0.672) | 0.297 | −0.073 (−0.521–0.406) | 0.766 |
| Number of swallows | 0.478 (−0.019–0.786) | 0.054 | 0.203 (−0.290–0.611) | 0.404 |
| Volume per swallow | −0.478 (−0.786–0.019) | 0.054 | −0.203 (−0.611–0.290) | 0.404 |
| TOMASS | ||||
| Number of chews | −0.002 (−0.494–0.491) | 0.993 | −0.323 (−0.686–0.168) | 0.177 |
| Number of swallows | 0.091 (−0.420–0.558) | 0.727 | 0.327 (−0.163–0.689) | 0.172 |
| Total time s | −0.085 (−0.554–0.426) | 0.746 | −0.369 (−0.712–0.117) | 0.120 |
| RR | ||||
| EAT-10 | 0.517 (0.051–0.798) | 0.028* | 0.126 (−0.361–0.559) | 0.607 |
| TWST total time s | 0.231 (−0.295–0.650) | 0.369 | 0.069 (−0.410–0.518) | 0.781 |
| TOMASS total time s | 0.112 (−0.403–0.573) | 0.667 | −0.224 (−0.625–0.270) | 0.357 |
| TWST volume per second | −0.212 (−0.628–0.200) | 0.415 | −0.107 (−0.535–0.365) | 0.664 |
| TWST volume per swallow | −0.199 (−0.620–0.311) | 0.443 | −0.110 (−0.537–0.363) | 0.655 |
| FEV1 L | −0.216 (−0.620–0.279) | 0.389 | −0.149 (−0.565–0.327) | 0.542 |
| FEV1 % pred | 0.176 (−0.317–0.594) | 0.486 | −0.052 (−0.495–0.412) | 0.833 |
Results of associations between EAT-10, IOPI and RR with BMI, TWST, TOMASS or spirometry variables. We used Spearman and Pearson correlation (R) to compute the nonparametric and parametric correlations, respectively. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity. *: p<0.05.