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Table 1 Core characteristics of cases and controls

From: Survival and death causes of patients with giant cell arteritis in Western Norway 1972–2012: a retrospective cohort study

  Clinical diagnosis ACR 1990 criteria fulfilled Biopsy-positive
Cases Controls Cases Controls Cases Controls
N = 881 N = 2577 N = 792 N = 2314 N = 528 N = 1584
Age at onset1 73 (8.6) 73 (8.6) 73.1 (8.5) 73.1 (8.5) 73.5 (7.9) 73.5 (7.9)
Female2 626 (71.1) 1823 (70.7) 566 (71.5) 1647 (71.2) 378 (71.6) 1134 (71.6)
Urban2 538 (61.1) 1360 (52.8) 484 (61.1) 1216 (52.5) 329 (62.3) 839 (53.0)
Biopsy-positive2 537 (61.0) 528 (66.7) 528 (100)
Median observation time3 8 [3, 14] 7 [3, 12] 8 [3, 14] 7 [3, 11] 6 [3, 13] 9 [6, 13]
Number of deaths during observation2 490 (55.6) 1517 (58.9) 432 (54.5) 1335 (57.7) 292 (55.3) 952 (60.1)
Age at death1 83.6 (7.5) 84.7 (7.5) 83.8 (7.4) 84.6 (7.6) 83.8 (6.9) 84.7 (7.4)
Time to death4 12 (11, 13) 12 (11, 12) 12 (11, 13) 12 (11, 12) 12 (11, 13) 12 (11, 12)
  1. ACR American College of Rheumatology, CI confidence interval, IQR interquartile range, SD standard deviation
  2. 1Mean (SD)
  3. 2N (%)
  4. 3Median [IQR]
  5. 4Median (95% CI)