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Table 4 Comparison of the general localization of lithiasis between 1965 and 2014 by decade

From: Retrospective epidemiological study of urolithiasis in western Algeria over a period of 50 years

Localization Periods P
1965–1974 1975–1984 1985–1994 1995–2004 2005–2014
Number % Number % Number % Number % Number %
Upper urinary tract 91 48.1 467 65.6 693 72.5 738 71 827 75.8 < 0.001 (chi-square calculated
Low urinary tract 98 51.9 245 34.4 263 27.5 302 29 264 24.2 value = 47.44 DF = 4)