Variable | Model 0 | Model 1 | Model 2 | Model 3 |
Initial PD20, log dose | ||||
B | −2.422 | −2.313 | −3.42 | −2.14 |
se | 1.039 | 1.049 | 1.384 | 1.070 |
OR | 0.08 | 0.09 | 0.03 | 0.11 |
CI | 0.01–0.68 | 0.01–0.77 | 0.002–0.49 | 0.01–0.95 |
p-value | 0.02 | 0.02 | 0.01 | 0.04 |
Duration of exposure, yrs | ||||
B | −0.08 | −0.08 | −0.13 | −0.10 |
se | 0.060 | 0.061 | 0.071 | 0.074 |
OR | 0.91 | 0.92 | 0.87 | 0.90 |
CI | 0.81–1.03 | 0.81–1.04 | 0.76–1.01 | 0.78–1.04 |
p-value | 0.16 | 0.19 | 0.06 | 0.16 |
Last exposure to TDI yrs | NI | NI | ||
B | 0.04 | 0.03 | ||
se | 0.089 | 0.102 | ||
OR | 1.04 | 1.03 | ||
CI | 0.87–1.24 | 0.84–1.26 | ||
p-value | 0.11 | 0.72 | ||
Interval since removal from exposure yrs (≥10 <10) | NI | |||
B | 2.02 | |||
se | 1.172 | |||
OR | 7.59 | |||
CI | 0.76–75.6 | |||
p-value | 0.08 | |||
Current inhaled steroids, yes versus no | ||||
B | 2.22 | |||
se | 1.211 | |||
OR | 9.22 | |||
CI | 0.85–99.08 | |||
p-value | 0.06 | |||
Prediction | 82.9 | 82.9 | 87.2 | 82.9 |
#: dependent variable
PD20 ≤1 mg
Model: NI: variable not included in the model
0: normal airway responsiveness (PD20 >1 mg)
1: airway hyperresponsiveness (PD20 ≤1 mg)
0: interval since removal from exposure ≥10 yrs
1: interval since removal from exposure <10 yr
0: no current inhaled steroids
1: yes current inhaled steroids
B: regression coefficient
OR: odds ratio
CI: 95% confidence interval