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. 2021 Jan 29;13:1759720X20987700. doi: 10.1177/1759720X20987700

Table 1.

Baseline characteristics of patients with axial spondyloarthritis who completed the 10 years of the trial (completers) and of those who dropped out before the end of Year 10 (non-completers).

Completers (n = 19) Non-completers (n = 57) p value
Age, years, mean (SD) 32.5 (7.4) 32.8 (8.9) 0.91
Male sex, n (%) 15 (78.9) 29 (50.9) 0.034*
Fulfilment of the modified New York criteria for AS, n (%) 12 (63.2) 27 (47.4) 0.24
Symptom duration, years, mean (SD) 1.1 (1.2) 1 (1.7) 0.81
HLA-B27 positivity, n (%) 18 (94.7) 44 (77.2) 0.09
CRP, mg/l, mean (SD) 7.5 (10.5) 12 (15.1) 0.06
Elevated CRP (CRP >5 mg/l), n (%) 7 (38.9) 33 (62.3) 0.09
ESR, mm/h, mean (SD) 16.8 (15.7) 23.3 (19.5) 0.21
Clinical arthritis, n (%) 4 (21.1) 15 (26.3) 0.65
Arthritis joint count, 0–64, mean (SD) 1.9 (4.4) 1.8 (4.4) 0.92
Clinical enthesitis, n (%) 9 (47.4) 35 (61.4) 0.40
Enthesitis score, 0–17, mean (SD) 2.8 (2.9) 4.3 (4.4) 0.20
PGA, 0–10, mean (SD) 6.1 (1.9) 7.2 (1.7) 0.025*
PhGA, 0–10, mean (SD) 5.5 (1.5) 6.5 (1.2) 0.007*
ASDAS, units, mean (SD) 3 (0.7) 3.5 (0.8) 0.042*
BASDAI, 0–10, mean (SD) 5.4 (1.1) 5.8 (1.3) 0.27
BASFI, 0–10, mean (SD) 4 (2.1) 4.4 (2) 0.41
BASMI linear, 0–10, mean (SD) 2.4 (0.9) 2.9 (1.3) 0.08
AS-QoL, 0–18, mean (SD) 7.6 (3.9) 10.1 (3.9) 0.019*
EQ-5D, 0–1, mean (SD) 0.7 (0.3) 0.6 (0.3) 0.13
NSAID intake score, 0–100, mean (SD) 86.5 (22.1) 86.1 (47.2) 0.97
Treatment with ETN during 1st year, n (%) 12 (63.2) 28 (49.1) 0.30
*

Significant at p < 0.05.

AS, ankylosing spondylitis; ASQoL, Ankylosing Spondylitis Quality of Life questionnaire; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Disease Functional Index; BASMI, Bath Ankylosing Spondylitis Metrology Index; CRP, C-reactive protein; EQ-5D, Euro Quality of Life Index; ESR, erythrocyte sedimentation rate; HLA, human leukocyte antigen; NSAID, nonsteroidal anti-inflammatory drugs; PhGA, physician’s global assessment; PGA, patient’s global assessment; SD, standard deviation.