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Table 1 Demographic frequencies in Hobbs* and in a control community**

From: Cluster of systemic lupus erythematosus (SLE) associated with an oil field waste site: a cross sectional study

  Exposed Unexposed  
  No. % No. % P-value
Age Category      
   18–34 35 37.63 37 28.68 0.85
   35–49 35 37.63 62 48.06  
   50–64 19 20.43 28 21.71  
   65+ 4 4.30 2 1.55  
Total 93   129   
Race/Ethnicity      
   Hispanic 44 48.89 5 3.88 <0.0001
   White 29 32.22 121 93.80  
   African American 12 13.33 0 0  
   Others 5 5.55 3 2.33  
Gender      
   Male 34 37.36 61 47.29 0.21
   Female 57 62.64 68 52.71  
Ever Smoked      
   Yes 35 38.89 52 40.31 0.83
   No 55 61.11 77 59.69  
Education Level      
   Less than 9th grade 6 6.45 0 0 <0.0001
   9 – 11th grade 22 23.66 13 10.08  
   12th/Vocational/Some College 57 61.29 86 66.67  
   College Graduate 8 8.60 30 23.26  
  1. *a residential population exposed to petroleum products and other environmental contaminants
  2. **no known exposures.