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Table 2 Principal stone types:

From: Predictors of gallstone composition in 1025 symptomatic gallstones from Northern Germany

  

Intermediate substances

 

Main substances

 

none

Apatite

Aragonite

Bilirubin

Bilirubin Apatite

Chol.

Chol. Calcite

Chol. Palmitate

Ca

Ca Apatite

Ca Bilirubin

Calcite

Calcite Bilirubin

Palmitate

Struvite

Polysaccharide

 

Cholesterol

 

0.860

0.001

 

0.041

0.001

   

0.006

 

< 0.001

0.002

    

0.911

Cholesterol

Bilirubin

0.013

< 0.001

           

< 0.001

  

0.014

Cholesterol

Bilirubin, Apatite

0.003

               

0.003

Cholesterol

Calcium

0.004

  

0.001

            

0.005

Bilirubin

 

0.021

0.001

< 0.001

  

0.002

 

0.001

 

< 0.001

   

0.001

  

0.027

Bilirubin

Apatite

0.005

     

0.001

 

< 0.001

       

0.006

Bilirubin

Aragonite

0.003

               

0.003

Bilirubin

Calcium

0.001

               

0.001

Apatite

    

< 0.001

        

< 0.001

   

0.001

Apatite

Colesterol

   

< 0.001

            

< 0.001

Apatite

Calcium

< 0.001

               

< 0.001

Aragonite

 

0.006

    

0.003

          

0.009

Aragonite

Colesterol

   

< 0.001

            

< 0.001

Calcium

 

0.002

  

0.002

 

0.001

         

0.001

0.006

Calcite

 

0.007

             

0.001

 

0.008

Calcite

Apatite

0.001

               

0.001

Calcite

Cholesterol

0.001

               

0.001

Stearate

 

0.001

               

0.001

Polysaccharide

                

0.001

0.001

                  

1

  1. The main and intermediate substances from all 2148 FTIR measurements are displayed in this cross-table. It is evident, that the various stone components are not mixed at random but rather fall into few, specific categories. Cells with "pure" stones and a frequency above 1% are marked in bold print. The combination of cholesterol and bilirubin (two cells) is marked in underlined italics. Values of "< 0.001" correspond to single observations. Abbreviations in the Table heading: Chol. Corresponds to Cholesterol and Ca corresponds to Calcium.