Multiple regression equations for adolescent females
| Dependent variable | Equation | Adjusted R2 | Residual# | p‐value |
| FRC | 0.0768e0.0203H | 0.30 | 1.02±0.20 | 1×10−4 |
| 0.10373e0.01768He0.04546PSt | 0.41 | 1.01±0.17 | 1×10−4 | |
| TLC | −7.6607+0.0752H | 0.46 | 1.00±0.12 | 1×10−7 |
| −8.306+0.0763H+0.0693TVI | 0.55 | 1.00±0.11 | 1×10−6 | |
| VC | −5.4044+0.0556H | 0.50 | 1.00±0.10 | 1×10−7 |
| −4.1863+0.0430H+0.1378TVI | 0.54 | 1.00±0.10 | 1×10−6 | |
| TL,CO | 11.5869+3.643PST | 0.21 | 1.00±0.16 | 1×10−2 |
FRC: functional residual capacity (L)
TLC: total lung capacity (L)
VC: vital capacity (L)
TL,CO: lung transfer factor for carbon monoxide (mL·min−1·mmHg−1)
H: height (in centimetres)
PSt: pubertal stage by time since menarche (yrs)
TVI: thoracic volume index (L)
PST: pubertal stage by Tanner scale
#: lung function/predicted lung function (mean±sd)