Related Variables

	agesmok	age when first smoked cigarettes	Lab Visit/Medical History
	cigar	Have you ever smoked cigars/cigarillos?	Lab Visit/Medical History
	moncigs	Last month, have you smoked Cigars?	Lab Visit/Medical History
	monpipe	Last month, have you smoked Pipes?	Lab Visit/Medical History
	packyr	Average packs smoked/year	Lab Visit/Medical History
	pipe	Have you ever smoked a pipe?	Lab Visit/Medical History
	yrssmoke	Years smoked	Lab Visit/Medical History