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Table 1 Prevalent systemic lupus erythematosus cohort description (n = 397)

From: Investigating lupus retention in care to inform interventions for disparities reduction: an observational cohort study

 Total cohortWhite/otherBlackp
n = 397n = 241n = 156 
Age category
 18–2954 (13.6%)30 (12.5%)24 (15.4%)< 0.001
 30–4096 (24.2%)50 (20.8%)46 (29.5%) 
 40–60175 (44.1%)102 (42.3%)73 (46.8%) 
 60–8067 (16.9%)56 (23.2%)11 (7.1%) 
 80+5 (1.3%)3 (1.2%)2 (1.3%) 
Female361 (90.9%)219 (90.9%)142 (91.0%)0.96
Race
 White221 (55.7%)221 (91.7%)NA< 0.001
 Black156 (39.3%)NA156 (100%) 
 Other20 (5.0%)20 (8.3%)NA 
Ethnicity
 Hispanic17 (4.3%)16 (6.6%)2 (1.3%)0.01
RUCA
 Urban329 (82.9%)175 (72.6%)154 (98.7%)< 0.001
 Suburban36 (9.1%)36 (14.9%)0 (0%) 
 Large town15 (3.8%)14 (5.8%)1 (0.6%) 
 Small town17 (4.3%)16 (6.6%)1 (0.6%) 
Smoking (ever)168 (42.3%)103 (43%)65 (42%)0.60
Payer
 Commercial176 (44.3%)139 (57.7%)37 (23.7%)< 0.001
 Medicaid71 (17.9%)24 (10.0%)47 (30.1%) 
 Medicare142 (35.8%)72 (29.9%)70 (44.9%) 
 Uninsured/unknown8 (2.0%)6 (2.5%)2 (0.06%) 
Neighborhood disadvantage by ADI quartile
 1st (least disadvantage)93 (25.0%)83 (34.4%)10 (6.4%)< 0.001
 2nd93 (25.0%)78 (32.4%)15 (9.6%) 
 3rd93 (25.0%)54 (22.4%)39 (25.0%) 
 4th (most disadvantage)93 (25.0%)13 (5.4%)80 (51.3%) 
Positive ACR criteria365 (91.9%)210 (87.1%)148 (94.9%)0.02
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