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Table 3 Average number of ICD diagnosis codes per physician in physician claims by payment program, 3-month period, January-March 2011

From: Mining rich health data from Canadian physician claims: features and face validity

Specialty   Fee-for-service   Alternative payment program
  Average claims Mean Median IQR* Average claims Mean Median IQR
Overall 1,184 88 73 22-143 438 44 28 17-54
Family medicine 1,382 124 124 74-173 586 88 75 47-129
Internal medicine 900 37 29 17-51 431 26 22 15-35
Neurology 599 33 34 14-50 323 23 23 16-31
Obstetrics and Gynecology 1,145 38 37 20-51 436 32 16 15-52
Pediatrics 681 54 52 12-86 296 35 25 16-44
Psychiatry 917 11 10 6-13 394 11 9 5-19
Radiology 131 12 8 5-14 N/A   N/A  
Surgery 756 36 34 23-47 383 28 25 20-32
Others 1,531 79 72 21-137 488 42 23 17-48
  1. *Inter-quartile range.