Derivation
variable: spousenum [number of spouses] (table[s]: css_seird1_8, css_sei)
variable: intdate [interview date] (table[s]: css_seird1_8, css_sei)
variable: comdate [completion date] (table[s]: ncdk_personal)
variable: nospouse [number of spouses] (table[s]: ncdl_personal )
For Karonga, the latest number of spouses report from the SEI (css_seird1_8 or css_sei) is taken, for Lilongwe this question was asked directly (ncdl_personal).