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Table 1 Demographic and social characteristics of the Hopkins Lupus Cohort by history of cancer

From: Association of systemic lupus erythematosus autoantibody diversity with breast cancer protection

Characteristic Overall (N = 2431) Cancer (N = 119) No cancer (N = 2312) p value*
Age of SLE onset, mean (SD) 28.5 (12.5) 32.9 (12.3) 28.3 (12.5) < 0.001
Age at cohort entry, mean (SD) 36.8 (12.6) 41.2 (13.6) 36.6 (12.5) < 0.001
First visit to last visit (years, mean (SD)) 7.2 (7.3) 13.2 (7.9) 6.9 (7.1) < 0.001
Female, no. (%) 2243 (92.3) 106 (89.1) 2137 (92.4) 0.19
Race, no. (%)
 White 1271 (52.3) 53 (44.5) 1218 (52.7) 0.08
 Black/African American 966 (39.7) 65 (54.6) 901 (39.0) < 0.001
 Other** 194 (8.0) 1 (0.8) 193 (8.3) 0.003
Smoking status (ever smoker), no. (%) 877 (36.1) 54 (45.4) 823 (35.6) 0.030
Alcohol (past) 167 (6.9) 13 (10.9) 154 (6.7) 0.08
Cancer-SLE interval, years (mean (SD)) 8.24 (6.70) 8.24 (6.70)   
Deceased, no. (%) 194 (8.0) 25 (21.0) 169 (7.3) < 0.001
  1. *p value for comparison between cancer and no cancer groups
  2. **Asian (N = 100, 4.1%), not Asian, White, Black/African-American or unspecified (N = 94, 3.9%)