Examining catastrophic health expenditures at variable thresholds using household consumption expenditure diaries.

Chima A Onoka; Obinna E Onwujekwe; Kara Hanson ORCID logo; Benjamin S Uzochukwu; (2011) Examining catastrophic health expenditures at variable thresholds using household consumption expenditure diaries. Tropical medicine & international health, 16 (10). pp. 1334-1341. ISSN 1360-2276 DOI: 10.1111/j.1365-3156.2011.02836.x
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OBJECTIVE: Using uniform thresholds and a set of variable threshold levels, this study examined the incidence of catastrophe amongst households of different socio-economic status (SES) quintiles. METHODS: A household diary was used to collect illness and household consumption expenditure data from 1128 households over 1 month. Catastrophic health expenditure was examined based on uniform threshold levels of non-food expenditure and a novel set of variable thresholds in which the levels for various SES groups were weighted by the ratio of household expenditure on food. RESULTS: A total of 167 households (14.8%) experienced catastrophe at a non-food expenditure threshold of 40%, with 22.6% and 7.6% of the poorest and richest household quintiles experiencing catastrophe. For the first set of variable scenarios, the thresholds for the poorest and richest household quintiles were 5% and 29.6% and levels of catastrophe were 44.7% and 12.0%, respectively, while the overall level was 36.5%. In the second scenario, the thresholds were 6.8% and 40%, and the levels of catastrophe were 42.5% and 7.6%, respectively, while the overall level was 32.0%. CONCLUSIONS: High levels of catastrophic expenditure exist in Nigeria. Use of variable thresholds to measure catastrophe led to higher overall and disaggregated levels of catastrophe. Such a measure is argued to be more appropriate for the examination of catastrophe.

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