Table 2:

Smoking Rates Stratified by Tobacco-21 Exposure

A. By Age-Group
	Recent Smoking			Current Established Smoking
Ages	No Tobacco-21	Tobacco-21	Smoking Gap	No Tobacco-21	Tobacco-21	Smoking Gap
18 to 20	63.7% (N=763)	45.9% (N=148)	17.8 percentage pts	50.3% (N=763)	28.4% (N=148)	21.9 percentage pts
21 to 22	69.5% (N=799)	67.3% (N=159)	2.2 percentage pts	63.5% (N=799)	56.0% (N=159)	7.5 percentage pts
B. By whether closest friends at age-16 smoked or vaped, 18–20 year-olds only
	Recent Smoking			Current Established Smoking
Friends’ Use	No Tobacco-21	Tobacco-21	Smoking Gap	No Tobacco-21	Tobacco-21	Smoking Gap
Yes	67.9% (N=570)	47.0% (N=117)	20.9 percentage points	57.4% (N=570)	30.8% (N=117)	26.6 percentage points
No	51.0% (N=243)	51.7% (N=60)	−0.7 percentage points	31.3% (N=243)	31.7% (N=60)	−0.4 percentage points

Notes: This table presents average smoking rates by tobacco-21 exposure stratified by age-group (section A) and, for 18–20 year-olds only, by whether any of the respondent’s three closest friends at age-16 smoked or vaped. Respondents from New York and Massachusetts are omitted. “Smoking Gap” is the difference between the smoking rate among those with vs. with tobacco-21 exposure, within a given stratum (i.e., row); that is, Smoking Gap = Smoking Rate _{No Tobacco-21 Exposure, Row X} - Smoking Rate _{Tobacco-21 Exposure, Row X.}