Table 2.

Demographic features and clinical characteristics among the groups of patients.

CharacteristicGroup 1 (UA) n = 25Group 2 (RA) n = 15Group 3 (SpA) n = 15
Sex (F/M)9/168/76/9
Age*33.0 ± 5.743.3 ± 9.339.5 ± 7.3
Disease duration, mos*14.4 ± 7.334.7 ± 17.120.6 ± 11.5
Age at onset*31.8 ± 5.240.7 ± 8.537.8 ± 7.2
Family history
  RA2 (8)2 (13.3)0 (0)
  PsA1 (4)0 (0)1 (6.7)
Enthesopathy0 (0)NA8 (53.3)
Dactylitis0 (0)0 (0)7 (46.7)
Psoriatic skin lesions0 (0)NA13 (86.7)
Nail changes (pits & onycholysis)0 (0)0 (0)5 (6.7)
Sacroiliitis0 (0)0 (0)2 (13.3)
Anterior uveitis0 (0)0 (0)4 (26.7)
Dry eyes0 (0)3 (20)0 (0)
  • * Data are mean ± standard deviation. All other data are percentages. UA: undifferentiated arthritis; RA: rheumatoid arthritis; SpA: spondyloarthropathy; NA: not applicable.