Table 3

Parameter estimates for the reduced model for the influence of FEV₁ predicted and age on height SDS, and FEV₁ predicted and BMI on bone area for height SDS in patients < 19 years of age

	B	SE	T	p Value	95% CI
Height SDS
Intercept	−0.666	0.245	−2.723	0.008	−1.155 to −0.178
FEV₁	2.227	0.177	12.580	< 0.001	1.874 to 2.580
Age	−0.463	0.039	−11.760	< 0.001	−0.542 to −0.385
Bone area for height SDS
Intercept	−4.695	0.527	−8.916	< 0.001	−5.746 to −3.644
FEV₁	−0.867	0.118	−7.336	< 0.001	−1.102 to −0.631
BMI	0.366	0.036	10.048	< 0.001	0.293 to 0.438

BMI, body mass index; CI, confidence interval; FEV₁, forced expiratory volume in one second expressed as a percentage of that predicted.