Table II.

Correlation coefficients of age, height and weight with spirometry variables among boys and girls.

	Boys Correlation coefficient with			Girls Correlation coefficient with
	Age	Height	Weight	Age	Height	Weight
FVC	0.944	0.840	0.713	0.955	0.787	0.655
FEV1	0.937	0.831	0.702	0.941	0.774	0.633
PEF	0.892	0.790	0.663	0.949	0.771	0.687
FEF25-75	0.898	0.794	0.670	0.936	0.742	0.659