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. 2019 Feb 8;58(7):1250–1258. doi: 10.1093/rheumatology/kez003

Table 1.

Baseline clinical characteristics of patients according to diagnosis

Diagnosisa P-valueb
RA (n = 47) Non-RA (n = 114)
Age, years 60 (21–87) 51 (17–92) <0.001
% Female 74 68 ns
Symptom duration 12 (2–52) 12 (2–>52) ns
TJC28 6 (1–20) 2 (0–25) 0.001
SJC28 1 (1–17) 0 (0–9) 0.002
CRP, g/l 10 (<5–66) 5 (<5–189) 0.005
ESR 21 (4–86) 9 (1–113) 0.004
%RF+ 64 10 <0.001
%ACPA+ 64 0 <0.001
DAS28 4.32 (2.24–7.15) n/a n/a
Non-RA diagnoses, number (% of 114)

  • PsA, 20 (17)

  • Other SpA, 18 (16)

  • Crystal, 10 (9)

  • Other IA, 8 (7)

  • OA, 25 (22)

  • Other non- IA, 33 (29)

Values are median (range) unless otherwise stated.

a

Baseline diagnosis was confirmed at median 20 months (range 13–25).

b

Mann–Whitney U test or chi-squared test with Yates’ continuity correction for continuous and dichotomous data respectively. TJC: tender joint count; SJC: swollen joint count; ns: not significant; n/a: not applicable; IA: inflammatory arthritis.