Disability-Disaggregated Data Collection: Hospital-Based Application of the Washington Group Questions in an Eye Hospital in Paraguay.

We assumed that there might be significant barriers for this patient group in Paraguay, considering the estimated national prevalence of blindness of 1.1% (95% CI 0.6–1.6) for people aged 50 years and older, a predominantly older population accessing the eye hospital, a high national prevalence of older people with psycho-social impairments and underdeveloped community-based mental health services [ 37 , 38 ].

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