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Table 1 Clinical information for all patients

From: The association between comorbidities and disease activity in patients with rheumatoid arthritis: a multicenter, cross-sectional cohort study in Japan with the highest proportion of elderly individuals

Variable

Value

Total patients

1838

Age (years)

66.4±13.0 (18–99)

 Elderly (≥ 65)

1103 (60.0)

Sex—male/female

365 (19.9)/1473(80.1)

Disease duration (months)

151±129 (20-1040)

Steinbrocker stage I/II/III/IV

517 (28.2)/407 (22.2)/442 (24.0)/472 (25.6)

Steinbrocker class I/II/III/IV

856 (46.5)/729 (39.7)/207 (11.3)/46 (2.5)

ACPA (U/ml)

133±307 (0–7690)

DAS

2.9±1.2 (0.28–7.9)

SDAI

7.3±6.8 (0.01–57.4)

HAQ

0.5±1.2 (0–49)

DMARDs usage

1607 (87.4)

 MTX usage

1117 (60.8)

 MTX dose (mg/week)

7.2±2.3 (1–14)

PSL usage

711 (38.7)

PSL dose (mg/day)

3.8±2.1 (0–25)

Biologics/JAK usage

501 (27.2)

Comorbidity

 Hypertension

619 (33.7)

 Diabetes mellitus

149 (8.1)

 Respiratory disease

224 (12.2)

 Cerebrovascular disease

86 (4.7)

 Cardiovascular disease

174 (8.0)

 Renal disease

464 (25.2)

 Malignant tumor

105 (5.7)

  1. Values are expressed as the number of patients (%) or the mean ± SD (range)
  2. ACPA anticyclic citrullinated peptide antibody, DAS Disease Activity Score-28 joint count, HAQ Health Assessment Questionnaire, DMARDs disease-modifying anti-inflammatory drugs, MTX methotrexate, PSL prednisolone, JAK Janus kinase inhibitors, SD standard deviation