Catastrophic household expenditure associated with out-of-pocket payments for dental healthcare in Spain.

Objective: To estimate the prevalence of catastrophic health expenditure due to dental healthcare (CHED) in Spain, quantify its intensity and examine the related sociodemographic household characteristics.

Methods: Data from the Spanish Household Budget Survey, which addresses more than 20,000 households each year for the period 2008-2015 were included, and the methodology proposed by Wagstaff and van Doorslaer was followed. The prevalence (number of households that devote more than a certain threshold of their income to such payments) and intensity (amount that exceeds a certain percentage of income) were estimated. Ordered logistic regression models were estimated to analyse the sociodemographic factors associated with the prevalence of catastrophic payments.

Results: The prevalence and intensity remained stable during the period under analysis. In terms of prevalence, a mean proportion of 7.36% of the population dedicated, in terms of intensity, more than 10% of their resources to dental care payments [mean: €292.75 per year (SD €2144.14)] and 2.05% dedicated more than 40% [mean: €143.02 per year (SD €1726.42)]. This represents 36.32% and 51.34% (for the thresholds of 10% and 40%) of the total catastrophic expenditure derived from out-of-pocket payments for dental healthcare in Spain.

Conclusion: This study shows that a significant proportion of catastrophic healthcare payments correspond to dental services. Being male, aged over 40 years, unattached (single, separated, divorced or widowed), having a low level of education, a low household income, being unemployed and living in an urban area are all associated with a greater risk of CHED. This finding highlights the need to establish policies aimed at increasing dental care coverage to mitigate related financial burdens on a large part of the Spanish population.