Table 1: First data collection data of our four clinics

    Clinic A   Clinic B   Clinic C   Clinic D*
                 
Number of medical records retrieved   268   214   169   148
                 
Percentage of records with
correct coding in ICPC-2 of
a clinical encounter 		  78.4%   87.2%   80.5%   78.0%
  95%
Confidence Interval
73.5-83.3% 		  95%
Confidence Interval
82.7-91.7% 		  95%
Confidence Interval
75.1-85.9% 		   
                 
Percentage of records with
complete coding of all
diagnoses/health problems
of a clinical encounter 		  94.4%   93.1%   87.0%   93.0%
  95%
Confidence Interval
91.7-97.1% 		  95%
Confidence Interval
89.7-91.6%		   95%
Confidence Interval
82.4-91.6%		    
                 
Mean number of codes per clinical encounter   1.7   1.9   1.5   2.1
                 
* Clinic D retrieved all 100 % of their medical records within the sampling period.