Skip to main content

Table 1 Demographic characteristics of the rheumatic disease patients a

From: Comparison of cancer incidence among patients with rheumatic disease: a retrospective cohort study

  RA (n = 2,104) SLE (n = 1,052) SSc (n = 274) DM (n = 107) PM (n = 49)
Age at RD diagnosis, yr, mean (SD) 51.0 (13.3) 35.0 (13.4) 48.5 (14.0) 45.5 (13.4) 47.9 (13.7)
Sex, female (%) 1,716 (81.6) 935 (88.9) 240 (87.6) 81 (75.7) 40 (81.6)
Mean follow-up duration, yr (SD) 7.4 (4.2) 8.9 (4.8) 6.6 (4.5) 6.1 (4.8) 6.7 (4.8)
Total follow-up duration in person-years 17,436 10,410 2,088 758 372
Cancer, n (%) 106 (5.0) 53 (5.0) 16 (5.8) 10 (9.3) 2 (4.1)
Age at cancer diagnosis, yr, mean (SD) 62.8 (11.7) 47.3 (14.7) 55.5 (11.9) 58.1 (14.6) 65.8 (0.3)
Time between RD and cancer, yr, mean (SD) 5.0 (3.5) 7.4 (4.0) 5.8 (3.5) 2.0 (2.1) 5.0 (6.1)
  1. aDM, Dermatomyositis; PM, Polymyositis; RA, Rheumatoid arthritis; RD, Rheumatic disease; SD, Standard deviation; SLE, Systemic lupus erythematosus; SSc, Systemic sclerosis.