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Table 2 Demographic characteristics in those with and without evident radiographic sacroiliitis respectively

From: The prevalence of moderate to severe radiographic sacroiliitis and the correlation with health status in elderly Swedish men – The MrOS study

  Moderate to severe sacroiliitis (grade 3 or 4)   
Characteristics No (N = 991) Median (IQR) Yes (N = 14) Median (IQR) p value Cases with missing information
Age (yrs.) 75.5 (72.8-78.4) 76.3 (73.4-78.0) 0.11 0
Height (cm) 174.2 (169.4-178.5) 176.9 (174.0-180.0) 0.10 0
Weight (kg) 79.5 (72.4-87.7) 80.3 (76.3-89.8) 0.99 0
BMI (kg/m 2 ) 26.3 (24.2-28.6) 25.4 (23.9-28.8) 0.59 0
  No (n, %) Yes (n, %)   
Ethnicity     
- Swedish 927 (93.5) 11 (78.6) 0.06 0
- Other 64 (6.5) 3 (21.4)   
Smoking     
- Never 306 (30.9) 4 (28.6)   
- Ever 683 (69.1) 10 (71.4) 1.00** 2/0
- Current 108 (15.5) 1 (10) 1.00** 292/4
  1. *IQR: Interquartile range **For ever/never smoking and current/never smoking in those with and without radiographic sacroiliitis. Cases with missing information in the two groups (with and without sacroiliitis).