Skip to main content

Table 1 Characteristics of the study population at inclusion

From: How age and sex affect the erythrocyte sedimentation rate and C-reactive protein in early rheumatoid arthritis

Characteristic

Mean (SD) or Median (IQR)*

Sex (female)

362/589 (61.5%)

Age (years)

57.34 (14.20)

Symptom duration (weeks)

14.00 (8.00-26.00)

Body mass index (kg/m2)

26.59 (4.44)

  Normal (N = 198)

22.64 (1.89)

  Overweight (N = 209)

27.09 (1.35)

  Obese (N = 97)

33.54 (3.23)

ESR (mm/hour)

21.00 (11.00-36.00)

CRP (mg/l)

7.00 (5.00-19.50)

28-Tender joint count

3.00 (0.00-7.00)

28-Swollen joint count

5.00 (2.00-9.00)

General health

44.55 (26.39)

DAS28-ESR

4.23 (1.51)

DAS28-CRP

4.00 (1.35)

SF36 – physical health

37.41 (9.32)

SF36 – mental health

48.13 (11.59)

HAQ

0.99 (0.72)

Anti-CCP positive

139/228 (61.0%)

Rheumatoid factor positive

285/520 (54.8%)

  1. *The values for sex, RF and anti-CCP positivity are the number of patients/number of patients assessed. DAS-28 = disease activity score for 28 joints, ESR = erythrocyte sedimentation rate, CRP = C-Reactive Protein, SF36 = Short Form Health Survey with 36 items, HAQ = Health Assessment Questionnaire.
Back to article page

BMC Musculoskeletal Disorders

ISSN: 1471-2474

Contact us