cap program drop fsmoker_intervene0 program define fsmoker_intervene0 syntax [varlist] [if] [in], is_startyr(integer) * FSmoker Initial Intervention * Keeps only persons that are in a household with 1 or 2 members that quit smoking. Sets wieght to 0 for people who have not quit smoking. bys hhid: egen inc = total(smokev == 1 & smoken == 0) keep if inc == 1 | inc == 2 replace weight = 0 if !(smokev == 1 & smoken == 0) end