Table 1 Definitions of tobacco use identified
DefinitionNo. of measures of association or estimates of prevalence
Month*51
Current31
Month +10012
Number of days of smoking/use in last month*10
“Have you ever smoked cigarettes regularly, that is, at least one cigarette every day for 30 days?”5
More than half a pack per day2
Used cigarettes more than six times in lifetime2
Year3
Use two or more times daily1
Unknown2
Total119

  • *Includes a measure of smokeless tobacco use.