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Table 1 Characteristics of patients with r-axSpA and matched controls

From: Patients with radiographic axial spondylarthritis have an impaired dietary intake—a cross-sectional study with matched controls from northern Sweden

 

Patients (n = 81), mean ± SD or N (%)

Controls (n = 319), mean ± SD or N (%)

p-value

Age (years)

57.9 ± 4.8

58 ± 4.6

1.0a

Male

54 (66.7)

211 (66.1)

1.0b

Born in Sweden

79 (97.5)

296 (92.8)

0.2b

BMI (kg/m2)

28.7 ± 6.0

27.1 ± 4.6

0.027a

Height (cm)

171.5 ± 9.6

174.8 ± 8.5

0.003a

Weight (kg)

84.9 ± 21.8

82.9 ± 15.8

0.4a

HLA-B27 positive

80 (98.8)

  

Age at diagnosis (years)

32.8 ± 8.6

–

 

Symptom duration (years)

34.6 ± 8.4

–

 

Diagnosis duration (years)

25.1 ± 9.6

–

 

ASDAS-CRP (score)

1.9 ± 0.8

–

 

BASDAI (score)

4.0 ± 1.9

–

 

BASFI (score)

3.3 ± 2.2

–

 

BASMI (score)

4.4 ± 1.4

–

 

mSASSSc (score)

22.3 ± 22.2

–

 

Median (25p, 75p) (score)

16.0 (3.3, 36.3)

–

 

Anti-rheumatic medication

 csDMARD and/or bDMARD

19 (23.5)

–

 

 csDMARD

9 (11.1)

–

 

 bDMARD

15 (18.5)

–

 

NSAID use frequency

  None

13 (16.0)

–

–

  On demand

19 (23.5)

–

–

   ≥ 2 days/week

49 (60.5)

–

–

Folate supplementation

 Self-reported use

9 (11.1)

–

 

 Prescribed by a physician

7 (8.6)

–

 

 Prescribed or self-reported

12 (14.8)

–

 

 Educational leveld

  

0.2b

 Junior high school or lower

6 (7.4)

35 (11.0)

 

 Senior high school

51 (62.9)

167 (52.4)

 

 College or university

24 (29.6)

117 (36.7)

 

Single household

18 (22.2)

51 (16.0)

0.2b

Ever smokere

42 (51.8)

143 (44.8)

0.3b

  1. Abbreviations: ASDAS-CRP Ankylosing Spondylitis Disease Activity Score CRP, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, bDMARD biologic disease-modifying anti-rheumatic drug, csDMARD conventional synthetic disease-modifying anti-rheumatic drug, HLA-B27 human leukocyte antigen B27, mSASSS Modified Stoke Ankylosing Spondylitis Spinal Score, NSAID non-steroidal anti-inflammatory drug, r-axSpA radiographic axial spondyloarthritis
  2. aMann Whitney test, using exact p-value or T-test depending on data distribution
  3. bFisher’s exact test
  4. cData missing from one individual, due to non-normal distribution median and 25th and 75th percentiles are also shown
  5. dData missing from one patient with r-axSpA and one control, categorized as junior high school or lower
  6. eData missing from five in the control group
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Arthritis Research & Therapy

ISSN: 1478-6362

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