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Table 6 Correlation coefficients of HHI of different conditions

From: Defining hospital markets – an application to the German hospital sector

Condition AAA APP BIRTH CABG CHOL ENDO HAP HIP KAP PNEU STROKE TOTAL
AAA 1.00            
APP 0.39 1.00           
BIRTH 0.51 0.63 1.00          
CABG 0.02 −0.04 −0.04 1.00         
CHOL 0.43 0.76 0.72 0.03 1.00        
ENDO 0.40 0.56 0.61 0.08 0.65 1.00       
HAP 0.35 0.51 0.53 0.16 0.57 0.82 1.00      
HIP 0.46 0.74 0.66 0.11 0.78 0.60 0.47 1.00     
KAP 0.36 0.48 0.50 0.15 0.57 0.84 0.83 0.46 1.00    
PNEU 0.43 0.75 0.70 0.06 0.83 0.63 0.54 0.79 0.57 1.00   
STROKE 0.37 0.59 0.59 0.02 0.66 0.60 0.49 0.64 0.51 0.69 1.00  
TOTAL 0.45 0.65 0.76 0.05 0.74 0.73 0.60 0.67 0.60 0.75 0.73 1.00