spex couart2 drop if art==0 // artificially truncated the data eststo ztp0: quietly ztp art fem mar kid5 phd ment, nolog eststo ztnb0: quietly ztnb art fem mar kid5 phd ment, nolog estadd prchange, outcome(0) : *0 eststo ztp1: quietly ztp art fem mar kid5 phd ment, nolog eststo ztnb1: quietly ztnb art fem mar kid5 phd ment, nolog estadd prchange, outcome(1) : *1 esttab, main(dc) nostar not scalars(outcome predval) mtitles eststo clear