“…For example, children under five have been chosen based on their gender (male and female) and age (below one year, 1–2 years, and 4–5 years). On the other hand, the auxiliary variables of the parents included sex (male and female), place of residence (urban and rural), age (15–24, 25–34, 35–44, and 45–49), source of drinking water (improved and unimproved), educational levels (non-educated, elementary, secondary, and above), literacy (literate and illiterate), marital status (married, never married, and others), type of toilet facility (has toilet facility and does not have toilet facility), the number of sons who passed away (none, one, or two or more), the number of daughters who passed away (none, one, or two or more), the size of the family (less than five, and five or more), the presence or absence of disabilities (disabled and not), and the type of employment (government employment, private employment, self-employment, employer, unemployed, or other employment) [ 2 , 48 , 49 ]. These variables are considered at the zonal level as auxiliary variables in SAEs.…”