sysuse nlsw88, clear
gen ed = cond(grade< 12, 1, ///
         cond(grade==12, 2, ///
         cond(grade<16,3,4))) if grade < .
gen byr = (1988-age-1950)/10
gen white = race == 1 if race < .

seqlogit ed byr south,                   ///   
         ofinterest(white) over(byr)     ///
         tree(1 : 2 3 4, 2 : 3 4, 3 : 4) ///
         levels(1=6, 2=12, 3=14, 4= 16)  ///
         or

seqlogitdecomp,                                     ///
         overat(byr -.5, byr 0, byr .4)             ///
         subtitle("1945" "1950" "1954")             ///
         eqlabel(`""finish" "high school""'         ///
                 `""high school v" "some college""' ///
                 `""some college v" "college""')    ///
         xline(0) yline(0)