Prevalence of severe/extreme sleep problems by presence of chronic condition and country among adults aged 50 years or over.

Abbreviation: COURAGE Collaborative Research on Ageing in Europe; SAGE WHO Study on global AGEing and adult health; S. Africa South AfricaData are % (SE). % is the percentage of individuals with sleep problems by the presence (Yes) or absence (No) of that chronic condition.Difference between individuals with and without that chronic condition is statistically significant (PaOverall sample, bFinland, cPoland, dSpain, eChina, fGhana, gIndia, hMexico, iRussia, and jSouth Africa.Prevalence of severe/extreme sleep problems by presence of chronic condition and country among adults aged 50 years or over.