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 | |||||||
Stone number | Number | % | Number | % | Number | % | Number | % | Number | % | |
01 stone | 169 | 89.4 | 568 | 79.8 | 696 | 72.7 | 675 | 64.9 | 734 | 67.3 | < 0.001 |
02 and more | 20 | 10.6 | 144 | 20.2 | 261 | 27.3 | 365 | 35.1 | 357 | 32.7 | |
Size | Avg ± SD | Avg ± SD | Avg ± SD | Avg ± SD | Avg ± SD | < 0.002 | |||||
2.41 ± 1.50 | 2.35 ± 1.40 | 2.26 ± 1.59 | 2.32 ± 1.54 | 2.05 ± 1.24 |