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Table 1 Demographic characteristics of AS patients and controls

From: Effect of food intake and ambient air pollution exposure on ankylosing spondylitis disease activity

  Cases Controls
Numbers 30 30
Age (yrs) (SD) 35.4 (10.1) 33.4 (8.1)
BMI (kg/cm2) (SD) 21.7 (3.1) 21.6 (3.2)
Smoking status N (%)
 smoker 13 (43%) 9 (30%)
 Non-smoker 17 (57%) 21 (70%)
Cigarette (pack/year) (SD) 2.6 (3.5) 2.2 (5.2)
Disease duration (yrs) (SD) 10.7 (6.7)
BASDAI score (SD) 4.02 (2.3)
BASFI Score(SD) 3.33 (2.6)
BASMI Score (SD) 3.38 (2.0)
BASG Score (SD) 4.06 (2.6)
Treatment N (%)
 NSAID 10 (33.3%)  
 DMARD 2 (6.7%)  
 NSAID+DMARD 10 (33.3%)  
  No Treatment 8 (26.7%)  
  1. BMI Body mass index, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI the Bath Ankylosing Spondylitis Metrology Index, BAS-G Bath Ankylosing Spondylitis Global Score, NSAID Non-steroidal anti-inflammatory drugs, DMARD Disease-modifying anti-rheumatic drugs