TABLE 1—

Algorithm for Calculating Ratio of Individuals Within a County Covered by a 100% Smoke-Free Law: United States, 2000–2009

Law Type	Calculation
100% smoke-free state law	Population covered = (total county population)
100% smoke-free county law, with county jurisdiction for entire county area	Population covered = (total county population)
100% smoke-free county law, with county jurisdiction limited to unincorporated areas only	Population covered = (unincorporated county population covered) + (incorporated population covered by a subcounty law)
No 100% state or county law	Population covered = (incorporated population covered by a subcounty law) + (unincorporated population covered by a subcounty law)