Derivation
variable: dmisabest [decade estimate of most recent (since last birth) miscarriage/abortion] (table[s]: tb_tbxto2007, tbold_part1/2, tb_tboto2007, tbold_control)
variable: dmisabmm [most recent (since last birth) miscarriage/abortion month] (table[s]: tb_tbxto2007, tbold_part1/2, tb_tboto2007, tbold_control)
variable: dmisabyear [most recent (since last birth) miscarriage/abortion year] (table[s]: tb_tbxto2007, tbold_part1/2, tb_tboto2007, tbold_control)
recode dmisabmm 0=.
replace dmisabyear=1895 if dmisabest==1
replace dmisabyear=1905 if dmisabest==2
replace dmisabyear=1915 if dmisabest==3
replace dmisabyear=1925 if dmisabest==4
replace dmisabyear=1935 if dmisabest==5
replace dmisabyear=1945 if dmisabest==6
replace dmisabyear=1955 if dmisabest==7
replace dmisabyear=1965 if dmisabest==8
replace dmisabyear=1975 if dmisabest==9
replace dmisabyear=1985 if dmisabest==10
replace dmisabyear=1995 if dmisabest==11
replace dmisabyear=1895 if dmisabest==12
replace dmisabyear=1907 if dmisabest==13
replace dmisabyear=1924 if dmisabest==14
replace dmisabyear=1940 if dmisabest==15
replace dmisabyear=1951 if dmisabest==16
replace dmisabyear=1960 if dmisabest==17
replace dmisabyear=1970 if dmisabest==18
recode dmisabyear 9999=. 0=.
gen dmisabdate=mdy(dmisabmm,15,dmisabyear) if dmisabmm~=. & dmisabyear~=.
replace dmisabdate=mdy(6,15,dmisabyear) if dmisabmm==. & dmisabyear~=.
