* Identify households with this structure:
* Spouse of head not present; children of head present; all children of head are unmarried
* Household structure is defined entirely in terms of de jure household members (hv102=1)

* head: hv101=1; spouse, hv101=2, child: hv101=3
* unmarried: hv115=0

use "...IAPR7EFL.DTA", clear 

keep if hv102==1

gen     spouse=0
replace spouse=1 if hv101==2

gen     child=0
replace child=1 if hv101==3

gen     unmarried_child=0
replace unmarried_child=1 if hv101==3 & hv115==0

egen nspouse         =total(spouse),          by(hv024 hv001 hv002)
egen nchild          =total(child),           by(hv024 hv001 hv002)
egen nunmarried_child=total(unmarried_child), by(hv024 hv001 hv002)

* reduce to one line per household
keep if hv101==1
drop spouse child unmarried_child
gen sex_of_head=hv104
gen age_of_head=hv105
gen     spouse_absent=0
replace spouse_absent=1 if nspouse==0

rename nchild nchildren
rename nunmarried_child nunmarried_children
gen nmarried_children=nchildren-nunmarried_children

tab sex_of_head spouse_absent if nchildren>0 & nmarried_children==0

* The households with the desired structure will be those with
*   spouse_absent=1, nchildren>0, and nmarried_children=0.