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Table 1 Characteristics of AS patients and controls

From: Normative values for the bath ankylosing spondylitis functional index in the general population compared with ankylosing spondylitis patients in Morocco

  AS Patients Controls P
  (n = 200) (n = 223)  
Age, mean ± SD years 39.1 ± 12.6 39 ± 12 NS
Age groups (years), No    
18-29 58 69 NS
30-50 103 106 NS
> 50 39 48 NS
Male sex, n (%) 153 (76.5) 171 (76.7) NS
BMI, mean ± SD years 28.2 ± 5.7 29.7 ± 5.3 0.01
Disease duration, mean ± SD years 10.6 ± 7.9 -  
Global pain, (VAS, 0-100 mm) 46 ± 23 -  
Nocturnal pain, (VAS, 0-100 mm) 39 ± 29 -  
BASDAI (0-10 scale), mean ± SD 4.08 ± 2.23 -  
BASFI (0-10 scale), median (range) 4.5 (1-10) 0.2 (0-4.7) < 0.001
  1. AS: ankylosing spondylitis, BASDAI: Bath Ankylosing Spondylitis Disease Activity Index, BASFI: Bath Ankylosing Spondylitis Functional Index, BMI: body mass index, NS: not significant, VAS: visual analog scale.