TABLE 1.

Frequency of Smoking Behaviors Across Smoking Definitions in National Survey of Young Adults Aged 18–25 Years (n = 1528): United States, 2005

	No.
Current smokersa	455
Types of current smokers
Established smokers: responded “no” to social smoking indicators	173
Social smoker: responded “yes” to at least 1 social smoking item	282
Types of social smokersb
Self-identified social smokers	244
Behavioral social smoker	180
Behavioral social smoker: smokes mainly with others	133
Behavioral social smoker: smokes only with others	47
Types of social smokersc
Self-identified social smokers	139
Behavioral social smoker: smokes mainly or only with others	38
Overlap between social smoking types: self-identified and smokes mainly with others or smokes only with others	105

^a100 or more lifetime cigarettes and smokes every day or some days.

^bInclusive of other smoking types.

^cExclusive of other smoking types.