Table 1: Definition of variables.

Variables DefinitionMean values

MILKPRE (milk preference)Packed milk = 1, unpacked milk = 0
GEN (gender)1 = male; 0 = female.643
AGE (age)Age of household head (years)38.047
EDU (education)University and postgraduates = 1, otherwise = 0.377
PS (professional status)Employed = 1, unemployed = 0.820
MS (marital status)Married = 1, otherwise = 0.783
HS (household size)Number of people (people/family)3.953
INC (income)Average monthly household income; ($/month/household)771.797
MILKPLACE (place of milk buying)Buying supermarket = 1, otherwise = 0.344338D+07
PREFREA (reason of milk preference)Packed milk is hygienic and healthy (agree = 1; not agree = 0).657
MILKPRI (milk price)
Packed milk price is expensive compared to unpacked milk price (agree = 1; not agree = 0).420