Related Variables

	fev1ppk	Percent of Knudson predictor: FEV1 (including race correlation)	Clinical Data/Diagnostic Studies/Lung Function/Spirometry
	pkfev1	Standardized Knudson predictor: FEV1	Clinical Data/Diagnostic Studies/Lung Function/Spirometry
	function	During which time of day do you function best?	Sleep Questionnaires/Chronotype