Table 1 Characteristics of subgroup SpA patients.

From: Differences between radiographic and non-radiographic axial spondyloarthritis patients in a Mexican cohort

 

Total SpA, N: 148

r-axSpA, n: 55 (37.2)

nr-axSpA, n: 70 (47.3)

Men

103 (69.8)

43 (78.2)¥

41 (58.6)¥

Male:female ratio

2.3:1

3.6:1

1.4:1

Age at symptom onset (yrs)

20 (14–26)

16 (12–21)∆

21 (17–28)∆

Age at diagnosis (yrs)

23 (17–29)

19 (16–26)

26 (18–33)

Delay in diagnosis (yrs)

2 (0–5)

3.5 (0–7)

1.5 (0–5)

BMI

23.1 (20.8–25.3)

21.8 (19.9–24.3)

23.5 (21.4–23.3)

HLA-B27

85 (57.4%)

38 (92.7%)¥

38 (54.3%)¥

  1. The information is displayed in the form of n (%) for categorical variables, whereas for continuous variables, n (IQR) is used.
  2. HLA-B27 human leukocyte antigen allele B-27, BMI body mass index, SpA spondyloarthritis, r-axSpA radiographic axial spondyloarthritis, nr-axSpA non-radiographic axial spondyloarthritis.
  3. ¥P < 0.05, †P < 0.001, ∆P < 0.0001.
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