Combines published estimates of long-term relapse (Hawkins 2010) with population survey data. It maps these probabilities onto the survey population's demographic structure (education, mental health, etc.) to derive aggregate relapse rates by Age, Sex, IMD, and Time Since Quit.
Usage
prep_relapse(
data,
hawkins_relapse = smktrans::hawkins_relapse,
lowest_year = 2003,
highest_year = 2018,
youngest_age = 18
)