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Table 2 Patient characteristics post-matching

From: The prevalence and burden of systemic lupus erythematosus in a medicare population: retrospective analysis of medicare claims

Characteristic SLE cohort Non-SLE cohort-matched controls
N = 6707 N = 13,414
Disability benefits, % 49.9 49.9
Mean age, years 61 61
Female, % 86.0 86.0
Race, %   
White 73.1 73.1
Black 20.3 20.3
Other 6.6 6.6
Region, %   
Northeast 16.4 16.4
Midwest 19.5 19.5
South 45.5 45.5
West 16.9 16.9
Other 1.7 1.7
Index year, %   
2003 81.1 79.6
2004 7.6 7.5
2005 6.1 6.3
2006 5.2 6.7
  1. No significant differences between groups.