Skip to main content

Table 1 Measured variables of participants classified as current smokers (CS), ex-smokers (XS), and never-smokers (NS)

From: Cigarette smoking associates with body weight and muscle mass of patients with rheumatoid arthritis: a cross-sectional, observational study

Gender Male (n = 102) Female (n = 290)
Smoking status CS XS NS CS XS NS
Number 20 50 32 49 97 144
Age, years 58.8 ± 8.1a 65.2 ± 9.9b 58.8 ± 15 57.4 ± 13.3a 64.1 ± 11.2b 60.7 ± 11.8
Height, cm 171.3 ± 7.1 174.3 ± 6.9 172.7 ± 7.7 160.9 ± 6.9 160.8 ± 6.8 159.5 ± 6.8
Weight, kg 76 ± 12.9b, c 85.8 ± 13.6 84.1 ± 14.8 67.5 ± 14.2a 74.8 ± 15.2 69.9 ± 13.6
Body mass index, kg/m2 25.8 ± 3.3b, c 28.4 ± 3.8 27.6 ± 4.6 26.1 ± 5.5a, b 28.6 ± 5.4 27.5 ± 5
Body fat, percentage 24.5 ± 6.4c, d 28.8 ± 6.8 27.8 ± 5.6 35.9 ± 7a, b 39.2 ± 6.5 38.1 ± 6.7
Fat-free mass, kg 57.2 ± 9.4 61.7 ± 7.7 59.8 ± 10.3 42.5 ± 4.8 43.7 ± 6.1 42.5 ± 6.1
Waist circumference, cm 100 ± 7.9c 106.2 ± 10.8b 102.9 ± 9.3 90.8 ± 12.8a 98.6 ± 13 94.7 ± 12.7
ESR, mm/hour 26.5 ± 20.5 22.8 ± 21.3 20.7 ± 19.7 30.5 ± 26 34.3 ± 32.7b 25.5 ± 19.8
C-reactive protein, mg/L 13.3 ± 9.4 16.1 ± 20.4 16 ± 24.3 21.9 ± 23.2b 21.4 ± 32.7b 11.9 ± 12.5
DAS28 4 ± 0.9 4.1 ± 1.5 3.9 ± 1.6 4.5 ± 1.5 4.3 ± 1.5 4.1 ± 1.2
HAQ score 0.9 ± 0.8 1.4 ± 1 1.1 ± 0.9 1.5 ± 0.9 1.5 ± 0.9 1.5 ± 0.9
Disease duration, years 8.6 ± 7.8 11.9 ± 10.6 14.6 ± 12.7 11.4 ± 9.8 13.5 ± 10.8 13.5 ± 11.1
  1. Values are presented as mean ± standard deviation. aSignificant difference compared with XS (P < 0.05). bSignificant difference compared with NS (P < 0.05). cSignificant difference compared with XS (P < 0.001). dSignificant difference compared with NS (P < 0.001). DAS28, Disease Activity Score-28; ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire.