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Table 2 Socioeconomic characteristics of the SLE patients and healthy controls

From: Low dynamic muscle strength and its associations with fatigue, functional performance, and quality of life in premenopausal patients with systemic lupus erythematosus and low disease activity: a case–control study

Variable Group  
SLE CONTROLS P-value
N % N %
Educational level      
 Literacy, 0 to 4 years 3 12 0 0 0.0003
 Primary, 5 to 8 years 8 32 0 0  
 Secondary, 9 to 12 years 9 36 23 92  
 University, 12 years > 5 20 2 8  
Employment      
 Paid 14 56 19 76 0.0702
 Unemployed 11 44 6 24  
Income†      
 No income 10 40 6 24 0.5345
 Up to 1 minimum salary 6 24 8 32  
 From 1 to 2 minimum salaries 6 24 8 32  
 Over 2 minimum salaries 3 12 3 12  
  1. † Brazilian minimum salary equivalent to US$280.00 in 2009 (R$ 465.00).