Catastrophic health expenditure and its determinants among Nigerian households.

Health expenditure can be substantial, especially in countries without national health insurance schemes, and it can negatively affect people's welfare. This study uses recent data to evaluate the extent to which Nigerian households suffer from catastrophic health expenditure (CHE) and evaluates its determinants. We used the Living Standards Survey 2018-2019 to estimate the headcount of Nigerian households that experience CHE-the proportion of health expenditures exceeding a certain ratio of such expenditures to non-food expenditures. To evaluate the determinants of CHE, we used ordinary least square regression with state fixed effects. The total sample was 22,110 nationally representative households. Many households, especially poorer ones, do not have any health care expenses; only 60.6% of the poorest households had some health-related expenditure. Even with the limited health-seeking behaviors in this demographic, the percentage of households that suffered from CHE was very high: with a 15% cutoff for CHE thresholds, 34.9 to 44.2% of households experienced CHE. Lower education, higher non-food consumption, and rural residence were correlated with higher amounts of health expenditure and higher odds of CHE. Health-seeking behaviors such as clinic visits for sickness treatment and prevention are limited, especially among the poorer households. Even so, the headcount of households experiencing CHE is very high in Nigeria. Advancing the implementation of national health insurance scheme is important to reduce the burden of health expenditure, especially among the poor, as well as to remove financial barriers to their seeking adequate health services.