Lung function parameters | Sex (males) | Age (years) | Height (cm) | BMI (%) | Weight (Kg) | Costant | N | R^2 | RSE |
---|
FVC | -0.049b
| 0.018 | 0.026c
| 0.015c
| [0.011] | -2.042c
| 328 | 0.57 | 0.15 |
FEV1
| -0.042b
| 0.038 | 0.023c
| 0.017c
| [0.013] | -1.907c
| 409 | 0.59 | 0.13 |
FEV0.75
| -0.034c
| 0.023b
| 0.022c
| 0.015b
| [0.008] | -1.729c
| 494 | 0.59 | 0.12 |
FEV0.5
| -0.031c
| 0.024b
| 0.017c
| 0.011b
| [0.001] | -1.311c
| 564 | 0.55 | 0.11 |
MEF75
| 0.059 | 0.108b
| 0.046c
| 0.024c
| [-0.113] | -3.385c
| 328 | 0.41 | 0.39 |
MEF50
| 0.002 | [0.024] | 0.033c
| [0.015] | [-0574] | -2.269c
| 328 | 0.29 | 0.32 |
MEF 25
| 0.012 | [-0.005] | 0.018c
| [0.075] | [-0.538] | -1.152c
| 328 | 0.19 | 0.22 |
- a = p < 0.05; b= p < 0.01; c = p < 0.001;
- BMI = body mass index;
- β = Multiple Regression Coefficient;
- FVC = forced vital capacity;
- FEV1= forced expiratory volume in one second;
- FEV0.75 = forced expiratory volume in 3/4 of a second;
- FEV0.5 = forced expiratory volume in half a second;
- MEF75 = instantaneous expiratory flow when 25% of FVC has to be expired
- MEF50 = instantaneous expiratory flow when 50% of FVC has to be expired
- MEF25 = instantaneous expiratory flow when 75% of FVC has to be expired
- [ ] brackets variables = excluded by log-likelihood ratio test because collinear or NS and not influent.
- * Reference values were computed as y' = Summ(BX)+constant; the 5
th
percentiles of reference values "as normality limit" was computed by subtracting to y' the 1.64* Root MSE