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Table 2 Claims for ambulant knee MRI in Norway, by geographic region

From: Magnetic resonance imaging of the knee in Norway 2002–2004 (national survey): rapid increase, older patients, large geographic differences

  n (rate = n per 1000 persons in region) Change in rate* from 2002 to 2004, %
  2002 2003 2004  
North 3 339 (7.2) 3 907 (8.4) 4 895 (10.6) + 47
Central 1 884 (3.0) 5 635 (8.8) 8 715 (13.6) + 359
West 3 599 (3.9) 7 877 (8.4) 12 079 (12.8) + 231
South 11 346 (12.9) 14 664 (16.5) 15 425 (17.3) + 35
East 22 672 (14.0) 27 987 (17.2) 30 126 (18.4) + 31
Norway 42 840 (9.5) 60 065 (13.2) 71 240 (15.6) + 64
  1. MRI = magnetic resonance imaging.
  2. For 2002, 2003 and 2004, respectively, 263, 202 and 235 claims with unspecified region have been included under specified regions, according to the relative number of claims for patients from these regions before inclusion.
  3. * Mantel-Haenszel chi-square test for linear trend in change: p < 0.001 for all regions.