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Table 2 Demographic and clinical features of patients with oligoarticular and polyarticular PsA.

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

Parameter

Oligoarticular PsA

Polyarticular PsA

Number of patients

28

17

Sex (male/female)

20/8

9/8

Age (years)

42.6 Ā± 10.9

43.7 Ā± 10.7

Disease duration (years)

7.4 Ā± 8.4

11.9 Ā± 11.1

Number of swollen joints

1.7 Ā± 1.0

9.2 Ā± 4.2

Serum CRP (mg/dl)

2.3 Ā± 3.6

3.4 Ā± 2.2

ESR (mm/hour)

19.2 Ā± 18.2

40.8 Ā± 21.1

Rheumatoid factor (positive/negative)

0/28

0/17

Sacroiliitis (ā‰„grade II; +/-)

2/15

4/12

Enthesitis (+/-)

6/14

10/6

Hand joint involvement (+/-)

9/12

14/3

Symmetrical joint involvement (+/-)

4/19

10/7

DIP joint involvement (+/-)

8/11

10/7

NSAID (+/-)

21/6

15/1

DMARD (+/-)

8/19

10/6

Corticosteroids (treated/untreated)

2/25

3/13

  1. Demographic and clinical features of patients with oligoarticular and polyarticular PsA. Values are expressed as mean Ā± standard deviation or as numbers. CRP, C-reactive protein; DIP, distal interphalangeal joint; DMARD, disease-modifying antirheumatic drugs; ESR, erythrocyte sedimentation rate; NSAID, nonsteroidal anti-inflammatory drug.