Spirometry (z-scores)a | Overall | Interaction Model | |||||||
---|---|---|---|---|---|---|---|---|---|
 |  |  | Girls | Boys | |||||
Cumulative Effect | 95% CI | Cumulative Effect | 95% CI | Cumulative Effect | 95% CI | ||||
 FEV1 | − 0.05 | − 0.13 | 0.02 | 0.10 | 0.00 | 0.18 | − 0.10 | − 0.19 | − 0.01 |
 FVC | − 0.09 | − 0.17 | − 0.02 | 0.03 | − 0.05 | 0.14 | − 0.12 | − 0.20 | −0.01 |
 FEV1/FVC | 0.03 | −0.05 | 0.09 | 0.02 | −0.04 | 0.11 | 0.02 | −0.04 | 0.10 |
 FEF25–75 | 0.03 | −0.05 | 0.09 | 0.08 | −0.01 | 0.17 | 0.00 | −0.07 | 0.07 |