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Table 1 Demographic and clinical features of patients with PsA, nonpsoriatic SpA (AS + USpA) and RA.

From: Synovial histopathology of psoriatic arthritis, both oligo- and polyarticular, resembles spondyloarthropathy more than it does rheumatoid arthritis

Parameter

PsA

Nonpsoriatic SpA

RA

Number of patient

22

28

52

Sex (male/female)

14/8

22/6

25/27

Age (years)

45.6 Ā± 11.0

43.3 Ā± 13.7

54.0 Ā± 14.9

Disease duration (years)

10.1 Ā± 11.5

8.4 Ā± 9.8

4.9 Ā± 6.2

Number of swollen joints

4.1 Ā± 4.0

3.7 Ā± 4.0

10.5 Ā± 6.8

Serum CRP (mg/dl)

2.1 Ā± 1.9

4.0 Ā± 5.8

6.0 Ā± 7.4

ESR (mm/hour)

23.6 Ā± 22.2

30.1 Ā± 30.5

35.7 Ā± 27.1

Rheumatoid factor (+/-)

0/21

1/26

36/13

NSAID (+/-)

15/7

25/3

38/14

DMARD (+/-)

6/16

7/21

21/31

Corticosteroids (+/-)

1/21

2/26

12/40

  1. The nonpsoriatic SpA subgroup includes 13 patients with AS and 15 with USpA. Values are expressed as mean Ā± standard deviation or as numbers. AS, ankylosing spondylitis; CRP, C-reactive protein; DMARD, disease-modifying antirheumatic drug; ESR, erythrocyte sedimentation rate; NSAID, nonsteroidal anti-inflammatory drug; PsA, psoriatic arthritis; RA, rheumatoid arthritis; SpA, spondyloarthropathy; USpA, undifferentiated spondyloarthropathy.