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Table 1 Demographic and anthropometric characteristics for the RA women.

From: Low level of physical activity in women with rheumatoid arthritis is associated with cardiovascular risk factors but not with body fat mass - a cross sectional study

  RA women all N = 61 MET-hours 1st quartile N = 14 MET-hours 4th quartile N = 14 P-value
Age (years) 60.8 (57.3-64.4) 60.0 (57.0-65.0)* 66.0 (63.0-76.0)* 0.09
Ever smoker, N, (%) 39 (64) 11 (79) 7 (50) 0.29
RA duration* 6.0 (2.0-15.0) 4.5 (2.0-10.0) 5.5 (2.0-14.0) 0.68
DAS28 3.3 (3.0-3.6) 3.4 (2.8-4.1) 3.1 (2.3-3.9) 0.32
ESR (mm/h)* 16.0 (9.0-29.0) 18.0 (13.0-21.0) 10.0 (5.0-27.0) 0.23
HAQ * 0.5 (0.13-1.13) 0.82 (0.25-1.0) 0.63 (0.13-1.13) 0.64
Patients on glucocorticoids, N, (%) 17 (28) 4 (31) 3 (20) 0.26
Glucocorticoids, mg* 5.0 (2.50-5.0) 3.12 (1.78-4.37) 3.9 (2.5-5.0) 0.54
Patients on anti-TNF, N, (%) 15 (25) 3 (23) 4 (27) 0.60
BMI (kg/m2)* 24.2 (21.6-26.6) 25.9 (23.6-29.5) 22.8 (20.4-26.5) 0.20
Waist (cm)* 83.0 (75.0-91.5) 87.2 (80.0-99.5) 79.0 (72.0-90.0) 0.11
Fat mass (%) 37.8 (35.7-39.9) 41.0 (36.1-45.9) 35.1 (31.1-39.0) 0.30
FMI (kg/m2)* 8.8 (6.4-11.4) 11.5 (8.4-14.7) 6.6 (6.3-11.1) 0.14
FFMI (kg/m2)* 15.3 (14.6-16.2) 17.5(14.7-17.1) 15.3 (14.7-16.7) 0.52
MET-hours* 40.0 (37.4-44.7) 35.9 (35.4-37.1) 45.8 (45.2-49.2) < 0.001
  1. The RA women are separated into the first and fourth quartiles of total physical activity, assessed as MET (= metabolic equivalents) hours.
  2. Data is presented as mean (CI) for normally distributed variables and as median (inter-quartile range) for non-parametric variables, * = median, N = numbers, % = percentage. DAS28 = Disease Activity Score including 28 joints, ESR = erythrocyte sedimentation rate, HAQ = Health Assessment Questionnaire, anti-TNF = Anti-tumour necrosis factor therapy, BMI = body mass index, FMI = fat mass index, FFMI= fat free mass index.