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Table 2 Baseline characteristics of VARA participants at the start of each biologic treatment episode

From: Derivation and preliminary validation of an administrative claims-based algorithm for the effectiveness of medications for rheumatoid arthritis

Characteristics

Biologics only (N= 197)

Biologics or DMARDs* (N= 305)

Patient demographics

  

   Age, years

60.9 ± 10.3

62.3 ± 10.4

   Males

185 (94%)

287 (94%)

   Race/ethnicity

  

   Caucasian, non-Hispanic

159 (81%)

248 (81%)

   Non-Caucasian, Hispanic

7 (4%)

8 (3%)

   Black, non-Hispanic

27 (14%)

45 (15%)

   American Indian or Pacific Islander

4 (2%)

4 (1%)

RA drug initiated

  

   Abatacept

9 (5%)

9 (3%)

   Adalimumab

74 (38%)

74 (24%)

   Etanercept

60 (31%)

60 (20%)

   Infliximab

34 (17%)

34 (11%)

   Rituximab

20 (10%)

20 (7%)

   Hydroxychloroquine

n/a

63 (21%)

   Leflunomide

n/a

20 (7%)

   Sulfasalazine

n/a

25 (8%)

RA-related characteristics

  

   DAS28

5.0 ± 1.5

4.9 ± 1.6

   CDAI (0-76)

30.2 ± 16.3

27.5 ± 15.2

   Physician global (0 to 100)

51.0 ± 22.1

50.3 ± 22.6

   Patient global (0 to 100)

57.4 ± 25.2

54.8 ± 24.2

   Tender joint count (0 to 28)

9.6 ± 8.6

8.5 ± 7.9

   Swollen joint count (0 to 28)

7.9 ± 7.2

7.8 ± 6.6

   MDHAQ (0 to 3)

1.2 ± 0.6

1.2 ± 0.6

   ESR, mm/hour

27.9 ± 23.3

29.9 ± 24.6

   CRP, mg/dL

1.9 ± 2.4

2.1 ± 2.5

  1. Data are n (%) or means ± SD. DMARD: disease-modifying agent; RA: rheumatoid arthritis; CDAI: Clinical Disease Activity Index; CRP: C-reactive protein; DAS28: Disease Activity Score in 28 joints; MDHAQ: Multi-Dimensional Health Assessment Questionnaire; ESR: sedimentation rate; n/a: not applicable; SD: standard deviation. *Includes hydroxychloroquine, leflunomide and sulfasalazine.