sex, race and
ethnic background, height, height squared, BMI,
BMI squared, and the presence or absence of respiratory
illness. This model explained 61% of the
variance in FEV1
and 69% of the variance in FVC
measurements at 15 years of age (i.e., R2=0.61
and 0.69, respectively). For each child
sex, race andethnic background, height, height squared, BMI,BMI squared, and the presence or absence of respiratoryillness. This model explained 61% of thevariance in FEV1 and 69% of the variance in FVCmeasurements at 15 years of age (i.e., R2=0.61and 0.69, respectively). For each child
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