Table 6 Suggested scoring method for claims-based index of rheumatoid arthritis severity (CIRAS)

Age (continuous)

Gender

   0: male

   1: female

Number of inflammatory marker tests ordered ^a

   0: no

   1: yes

Rehabilitation visits ^a

   0: no

   1: yes

Rheumatoid factor test ^a

   0: no

   1: yes

Felty's syndrome ^a

   0: no

   1: yes

Number of platelet counts ordered ^a

   0: platelet count = 0

   1: platelet count = 1

   2: platelet count = 2

   3: platelet count = 3

   4: platelet count ≥ 4

Number of chemistry panels ordered ^a

   0: chemistry panels = 0

   1: chemistry panels = 1

   2: chemistry panels = 2

   3: chemistry panels = 3

   4: chemistry panels = 4

   5: chemistry panels ≥ 5

Rheumatologist visits ^a

   1: number of rheumatology visits = 0

   2: number of rheumatology visits = 1, 2, 3, or 4

   3: number of rheumatology visits>4

Intercept