Significant independent predictors of ln(maximal oxygen uptake (V′O2,max)) in patients with cystic fibrosis#
| Model 1¶ | Model 2+ | |
| Predictor: regression coefficients | ||
| Constant | -2.8050 | -2.9520 |
| FEV1 % pred | 0.00541±0.000978*** | 0.00494±0.00098*** |
| ln(TMW) ln(J) | 0.3556±0.10*** | 0.3612±0.09*** |
| ln(height) ln(m) | 1.5602±0.49** | 1.5826±0.48** |
| Sex§ | -0.0999±0.04* | -0.0895±0.04* |
| Measure of physical activity | ||
| Total accelerometer count per day | 4.29×10-7±1.53×10-7** | |
| Daily time spent in moderate and vigorous activities min | 0.00172±0.0005*** |
Data are presented as regression coefficients±se, unless otherwise indicated. FEV1: forced expiratory volume in one second; TMW: total mechanical work. #: the multiple linear regression models describe the data well; ¶: r = 0.89, r2 = 0.79; +: r = 0.89, r2 = 0.80; §: male = 1, female = 2. *: p<0.05; **: p<0.01; ***: p<0.001.