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Table 4 Age-specific prevalence ratio for vertebral fractures in ankylosing spondylitis patients

From: Incidence and predictors of morphometric vertebral fractures in patients with ankylosing spondylitis

Age (years) Age ≥40 years General population SPR (95% CI)
  (n = 108) (n = 2684) 1  
  Number of VF/total (%) Number of VF/total (%)  
<40   Not available  
40 to 49 14/69 (33.3%) 26/494 (5.2%)  
50 to 59 7/28 (25.0%) 70/840 (8.3%)  
60 to 69 3/7 (28.6%) 177/964 (18.4%)  
70 to 79 3/4 (75%) 91/386 (30.8%)  
Total 27/108 (25%) 364/2684 (13.6%) 3.3 (2.1 to 4.5)
  1. 1Data from Shin et al. [16]. VF, vertebral fracture; SPR, standardized prevalence ratio.