Center for Studying Health System Change

Providing Insights that Contribute to Better Health Policy

You can refine your search with the following modifiers:

*	Use an to perform a wildcard search.Example: prescript* would return "prescription", "prescriptions" etc.
""	Use quotes to match a phrase.Example: "prescription drug" only returns results where the words are next to each other.
+	Use a plus sign to perform a search where the additional term MUST be part of the page.Example: prescription +drug
-	Use a minus sign to perform a search where the additional term SHOULD NOT be part of the page.Example: prescription -drug
< >	Use a < > sign to perform a search where the additional term should be of greater or lesser importance in the search.Example: prescription >drug Find pages with the word precription with additional importance for the word drug.
( )	Use parentheses to group different search terms together.Example: prescription (+medicare -drug)

NUMBER OF PERSONS
(IN MILLIONS)

PERCENT OF ADULT
POPULATION
(S.E.)

U.S. Adult Population¹

195.2

100

Current Smokers

49.0

25.1 (0.4)

Someday Smokers

11.0

5.6 (0.1)

Everyday Smokers²

38.0

19.5 (0.4)

1-20 cigarettes/day

29.4

15.0 (0.3)

21-39 cigarettes/day

5.0

2.6 (0.1)

>=40 cigarettes/day

3.4

1.7 (0.1)

Former Smokers

46.9

24.0 (0.3)

Recent Quitters³

4.9

2.5 (0.1)

Long-term Quitters⁴

42.0

21.5 (0.3)

Non-Smokers⁵

99.3

50.9 (0.5)