From:  Long-term cardiovascular sequelae of COVID-19 in patients with pre-existing heart failure: a systematic review

 Geographic distribution of included studies by region and income level (World Bank classification).

RegionStudies (n)% of totalIncome levelExample countries
North America1636%HighUSA, Canada
Europe1329%HighUK, Italy, Sweden, Spain
Asia1022%MixedIndia, China, South Korea
Latin America/Multinational613%MixedBrazil, multinational
Total45100%84% High16% LMICs

LMICs: low- and middle-income countries.