* Section 3
logistic dead spiders hepat bilir copper
logistic dead spider_mar hepat bilir copper
* Section 4
gen prod = hepat*dead
logistic miss_mar hepat dead prod 

mi set mlong
mi register regular copper_50 bilir_2 hepatom dead prod
mi register imputed spider_mar
mi impute logit spider_mar = hepat copper_50 bilir, add(50) rseed(333) replace
mi estimate, or: logistic dead hepat spider_mar copper_50 bilir_2
save imputeddata1.dta, replace

mi extract 0, clear
mi set mlong
mi register regular copper_50 bilir_2 hepatom dead
mi register imputed spider_mar
mi impute logit spider_mar = dead hepat copper_50 bilir, add(50) rseed(333)
mi estimate, or: logistic dead hepat spider_mar copper_50 bilir_2