Figure 1. Mean annual incidence of valvular surgery for rheumatic heart disease (RHD) and degenerative valvular disease as the underlying etiology of the valve dysfunction per 100,000 population, according to age and payment source.

A. Incidence calculated for all surgeries. B. Incidence calculated for surgeries paid by the public health sector. C. Incidence calculated for surgeries paid by the private sector.