Table 7.
Multivariate logistic regression analysis of predictors for persistent asthma at follow-up
| |
“A priori” |
“A posteriori” |
||
|---|---|---|---|---|
| |
|
Predictive |
Descriptive |
|
| |
Model 1 |
Model 2 |
Model 3 |
Model 4 |
| Dependent variables | Persistent asthma symptoms at follow-up | Persistent NSBHR at follow-up | Persistent asthma symptoms at follow-up | Persistent asthma symptoms at follow-up |
|
Co-variates |
|
|
|
|
| Age at T0 |
0.08 (p = 0.02) |
0.03 (p = 0.35) |
0.04 (p = 0.27) |
|
| Age at T1 |
|
|
|
0.09 (p = 0.06) |
| Total exposure time |
|
-0.02 (p = 0.04) |
|
|
| Symptomatic exposure time |
0.01 (p = 0.37) |
0.03 (p = 0.10) |
|
|
| Upper airway symptoms at T0 |
|
|
-1.91 (p = 0.12) |
|
| Upper airway symptoms at T1 |
|
|
|
1.36 (p = 0.29) |
| FEV1/FVC at T0 |
|
|
-0.11 (p = 0.05) |
|
| Asthma medication at T1 |
|
|
|
2.85 (p < 0.001) |
| Intercept |
-2.90 |
-0.32 |
9.01 |
-5.98 |
| R2 | 0.22 | 0.28 | 0.39 | 0.55 |
Legend: FVC = forced expiratory vital capacity, FEV1 = forced expiratory volume in 1 second. NSBHBR = non specific bronchial hyperreactivity. R2 = Nagelkerke R Square. Data are presented as B-coefficient (p-value).