Table 1.

Age of onset of tobacco use and subsequent smoking behaviors.

	Age of first cigarette use	Age of first cigarette purchase	Interval between 1st and 2nd cigarette
Number of cigarettes smoked per week	.14**	.19***	.08†
Smoking when so ill that the person is unable to get out of bed	.16***	.21***	.16***
Needing a cigarette in order to function	.11*	.16***	.09*
Making special trips to purchase cigarettes	.03	.07	.06
Chain smoking	.03	.06	.01
Smoking more cigarettes than intended	.03	.03	.04
Perceived benefits derived from continuing to smoke	.10*	.16***	.09*
Perceived harms resulting from continuing to smoke	.05	.02	.06

^† P < .10, *P < .05, **P < .01, and ***P < .001.