비근로소득은 가구 전체의 근로소득, 금융소득, 부동산임대소득 등 합산소득에서 해당 여성의 소득을 차감하여 계산하였다.
Non-earned income was calculated by subtracting the woman's income from the combined income of the whole household's earned income, financial income, and real estate rental income.