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Table 2 Evolution of the average age of lithiasis in the Urology service of the University Hospital Center of Oran during the last five decades

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

Variables Periods P
1965–1974 1975–1984 1985–1994 1995–2004 2005–2014
Avg ± SD Avg ± SD Avg ± SD Avg ± SD Avg ± SD
Average age 28.8 ± 21 34.1 ± 19.8 37.3 ± 19.9 42.6 ± 17.5 48.3 ± 16.8 < 10–6
  1. Avg: average, SD: standard deviation