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Table 3 Overall mean percentage meeting the measure and centre specific percentiles

From: Clinical action measures improve the reliability of feedback on quality of care in diabetes centres: a retrospective cohort study

  Overall P10 P50 P90
Threshold measure
 LDL index value     
  Number of centres 63    
  (Number of patients per centre, range) (5–99)    
  Total number of patients 1635    
  Total score (%) 61.7 48.4 63.6 76.4
 non-HDL index     
  Number of centres 89    
  (Number of patients per centre, range) (5–126)    
  Total number of patients 3411    
  Total score (%) 64.8 49.6 64.7 77.1
Clinical action measure
 LDL index value     
  Number of centres 63    
  (Number of patients per centre, range) (5–99)    
  Total number of patients 1635    
  Total score (%) 67.0 54.7 68.8 $ 81.0
 non-HDL index value     
  Number of centres 89    
  (Number of patients per centre, range) (5–126)    
  Total number of patients 3411    
  Total score (%) 70.0 55.7 69.2 ° 80.6
  1. Overall mean percentage meeting the measure for each measure, and the centre specific 10th, 50th and 90th percentiles. Only centres with five or more patients were taken into account. Statistical significance between median centre specific score for the threshold measure and the clinical action measure was tested by the Wilcoxon-test: p < 0.001 (°) and p < 0.01 ($) vs. the threshold measure