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Table 5 Cumulative prevalence estimates for cases which satisfy classification criteria applied to GP record data

From: The prevalence of giant cell arteritis and polymyalgia rheumatica in a UK primary care population

Criteria set All   Female   Male  
  N Pr (95 % CI) N Pr (95 % CI) N Pr (95 % CI)
GCA (21 cases reported in GP records)
Hunder 13 0.25 (0.11, 0.39) 9 0.33 (0.12, 0.55) 4 0.16 (0.00, 0.32)
PMR (117 cases reported in GP records)
Bird 47 0.91 (0.65, 1.17) 28 1.04 (0.65, 1.42) 19 0.78 (0.43, 1.12)
Healey; Chuang; Doran 62 1.20 (0.90, 1.50) 39 1.44 (0.99, 1.89) 23 0.94 (0.56, 1.32)
Jones and Hazleman 79 1.53 (1.20, 1.87) 49 1.81 (1.31, 2.31) 30 1.22 (0.79, 1.66)
  1. N total number of people identified in the practice. Pr: cumulative prevalence based on a total population of 5,159 (2,706 female, 2,453 male). Inflammatory markers were available in 100 out of 117 GP record cases (of which 96 had ESR and 33 CRP with overlap of 29 cases with both CRP and ESR results at time of diagnosis)