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 |