Journal of Rheumatic Diseases

Table. 1.

Demographic and clinical characteristics of patients included in the studies

Characteristic RA study (n=740) LN study (n=307) MG study (n=104)
Age (yr)
Mean (SD) 53.7 (13.4) 37.3 (11.9) 53.5 (13.7)
Range 7.0∼89.0 13.0∼39.0 21.0∼86.0
Age group (yr)
<20 1 (0.1) 15 (4.9) 0
20 to <40 117 (15.8) 169 (55.1) 15 (14.4)*
40 to <60 350 (47.3) 110 (35.8) 54 (51.9)
≥60 272 (36.8) 13 (4.2) 35 (33.7)
Sex, female 609 (82.3) 273 (88.9) 60 (57.7)
Duration of RA, LN, or MG, months
Mean (SD) 74.2 (73.3) 75.8 (64.9) 92.0 (99.6)
Median NA 60.0 42.7
Range 1∼523 1∼281 0.48∼432
Concomitant medications 738 (99.7) 307 (100.0) 101 (97.1)
Current comorbidity 409 (55.3) 307 (100.0) 82 (78.9)
Previous illness NR 90 (29.3) 28 (26.9)
Current illness NR 307 (100.0) 82 (78.9)
Hepatic impairment 30 (4.1) 11 (3.6) 2 (1.9)
Renal impairment 10 (1.4) 108 (35.2) 0

Data expressed as n (%) patients unless otherwise stated. LN: lupus nephritis, MG: myasthenia gravis, NR: not recorded, RA: rheumatoid arthritis, SD: standard deviation, NA: not available. *≥19 to <40 years.

J Rheum Dis 2021;28:202~215 https://doi.org/10.4078/jrd.2021.28.4.202
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