Table 4

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

1Data from Shin et al. [16]. VF, vertebral fracture; SPR, standardized prevalence ratio.

Kang et al.

Kang et al. Arthritis Research & Therapy 2014 16:R124   doi:10.1186/ar4581

Open Data