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Table 6 Evolution of the number and the size of lithiasis between 1965 and 2014 at the level of Urology service of the University Hospital center of Oran

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

  
  1. Avg: average, SD: standard deviation