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Table 4 The problem events with appropriate and inappropriate ICPC codes (before and after 2000) for the four problem areas.

From: Sixteen years of ICPC use in Norwegian primary care: looking through the facts

   Pneumonia Diabetes Tonsillitis Anaemia
   A I A I A I A I
  Problem events (#) 3419 5 9450 935 4081 34 5248 35
  % of the total events per area 95.8% 0.1% 84.8% 8.4% 96.5% 0.8% 94.7% 0.6%
Before 2000 Median ± SD 444 ± 93 0 ± 1 1222 ± 449 114 ± 16 543 ± 107 13 ± 4 702 ± 181 0 ± 11
  Mean ± SE 427 ± 32.9 1 ± 0.5 1181 ± 158.7 117 ± 5.6 510 ± 37.8 4 ± 1.4 656 ± 64.1 4 ± 4.0
  Range 228-544 0-4 390-1628 96-148 324-645 1-13 250-851 0-32
  Problem events (#) 5411 11 17874 2222 3982 98 8898 6
  % of the total events per area 99.6% 0.2% 88.9% 11.0% 97.3% 2.4% 99.7% 0.1%
After 2000 Median ± SD 611 ± 199 1 ± 2 2150 ± 381 263 ± 58 442 ± 128 13 ± 4 1138 ± 109 1 ± 1
  Mean ± SE 676 ± 70.5 1 ± 0.6 2234 ± 134.8 278 ± 20.4 498 ± 45.2 12 ± 1.5 1112 ± 38.4 1 ± 0.4
  Range 447-1011 0-4 1837-2802 216-402 366-667 6-19 883-1247 0-3
  1. Mean, median and range were calculated per group of problem events.
  2. A: Problem events with appropriate ICPC codes for pneumonia (R78, R80, R81, R95, R99); diabetes (A91, F83, F92, L99, N94, T87, T90, T99, U99, W84); tonsillitis (R72, R76, R90); and anaemia (A85, B74, B78, B79, B80, B81, B82, B99, T91).
  3. I: Problem events with inappropriate ICPC codes for pneumonia (D01, U88, R74, R96); diabetes (D01, D11, D70, K77, F29); tonsillitis (D01, R21, R24); and anaemia (D01, L84).
  4. SD: Standard Deviation; SE: Standard Error of the Mean.
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