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. 2016 Apr 20;31(3):239–247. doi: 10.5606/ArchRheumatol.2016.5838

Table 1. Demographic, clinical, and laboratory characteristics of females with rheumatoid arthritis.

  n % Mean±SD Range
Age (years)     44.2±9.1 23-55
Duration of marriage (years)     18.5±3.5 3–37 
Degree of education        
   Illiterate 164  82    
   Read and write 36 18    
Duration of illness (years)     5.8±4.1 1.5-17
   Disease activity        
      Number of swollen joints     5.9±3.5  
      Number of tender joints     5.3±2.9  
      Index of disease activity     2.5±0.5  
      Morning stiffness (minutes)     88.2±52.0  
      Erythrocytic sedimentation rate (mm/h)     53.3±20.3  
      C-reactive protein     30.3±11.3  
      Ritchie articular index     27.0±7.2  
      Rheumatoid factor     32.5±4.3  
Knee joint involvement 148 74    
Hip joint involvement 138 69    
Treatment        
   Methotrexate and nonsteroidal antiinflammatory drugs 65 32.50    
   Steroids 40 20    
   Nonsteroidal antiinflammatory drugs 69 34.45    
   Colchicine 2 1.00    
   Methotrexate and hydroquinone 24 12    
Groups of patients according to the age at presentation        
   18-39 years old 146 73    
   40-55 years old 54 27    
Groups of patients according to the duration of illness        
   <2 years 36 18    
   ≥2 years 164 82    
SD: Standard deviation.