Description Usage Arguments Value
smoke
1 | attach_smoke(data, years, Year = FALSE)
|
data |
data |
years |
years |
Year |
logical |
return three class of smoke
never: smoked less than 100 cigarettes in life
former: smoked less than 100 cigarettes in life and smoke not at all now
now: smoked moth than 100 cigarettes in life and smoke some days or every day
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