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Meta-Analysis
©The Author(s) 2026.
World J Clin Urol. Feb 12, 2026; 15(1): 115330
Published online Feb 12, 2026. doi: 10.5410/wjcu.v15.i1.115330
Table 11 World bank income classification
Income level
Countries
Studies (n)
Sample size (n)
% of total
Coverage status
High-incomeUnited States, Norway, Netherlands36626987.2%Represented
Upper-middle-incomeBrazil, China, Turkey, Tunisia7974012.8%Represented
Lower-middle-incomeNone000%Not represented
Low-incomeNone000%Not represented


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