Table 2.

Age specific Pearson correlation coefficients between length-adjus V'maxFRC^* (natural logarithm of ml/sec) and adjusted pre- and post-bronch function at ages 11, 16 and 22. ted infant odilator lung

	Height, weight and sex adjusted lung function† at
	Age 11yr (n=109)		Age 16yr (n=87)		Age 22yr (n=83)
	r‡	p	r‡	p	r‡	p
Pre-bronchodilator
FEV1/FVC Ratio	0.38	<0.001	0.32	0.003	0.34	0.002
FEF25-75	0.34	<0.001	0.33	0.002	0.30	0.006
FEV1	0.18	0.06	0.18	0.09	0.18	0.1
FVC	-0.03	0.7	-0.03	0.8	-0.07	0.5
Post-bronchodilator
FEV1/FVC Ratio	0.26	0.007	0.28	0.01	0.30	0.006
FEF25-75	0.31	0.001	0.28	0.01	0.27	0.01
FEV1	0.09	0.4	0.14	0.2	0.13	0.2
FVC	-0.06	0.6	-0.02	0.9	-0.04	0.7

^*V'maxFRC measured in infancy was logarithmically transformed, adjusted for length and standardized to the average length of the infants at 2 months of age (57.4 cm) as previously reported (4)

^†Spirometry indices were regressed with height, weight and sex and the standardized residuals saved and used as the outcome measure

^‡Pearson correlation coefficient