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Table 3 Comparison of variables across aPWV quartiles

From: Determinants of arterial stiffness in COPD

  Quartile 1 (4.1 – 8.04 m/s) n = 38 Quartile 2 (8.05 – 9.69 m/s) n = 36 Quartile 3 (9.7 – 11.74 m/s) n = 41 Quartile 4 (>11.75 m/s) n = 38
Age (years) ¥ 59.4 (7.2) 61.7 (6.9) 63.6 (7.7)* 68.1 (8.4)**
Male, n (%) 20 (53) 17 (47) 22 (54) 24 (63)
Race, Caucasian, n (%) 34 (89) 33 (92) 39 (95) 36 (95)
BMI (kg/m2) 26.4 (4.8) 27.2 (4.9) 26.1 (4.6) 28.0 (4.7)
Current smoker, n (%) 13 (34) 18 (50) 20 (49) 26 (68)*
Total pack-years 55.32 (29.81) 48.75 (23.67) 55.56 (20.59) 66.92 (38.69)
FEV1 (%predicted) 52.99 (15.17) 59.56 (13.43) 55.18 (15.36) 54.26 (15.97)
FEV1 (L) 1.61 (0.62) 1.76 (0.62) 1.60 (0.58) 1.54 (0.57)
Cardiovascular disease, n (%) 10 (26) 8 (22) 14 (34) 21 (55)*
Diabetes mellitus, n (%) 8 (21) 11 (31) 10 (24) 17 (45)
Heart Rate (per minute) 69.6 (10.3) 69.1 (11.1) 68.5 (13.4) 71.2 (8.8)
Systolic blood pressure (mmHg) ¥ 120.5 (17.3) 125.9 (14.1) 128.8 (17.2)* 134.7 (16.8)**
Diastolic blood pressure (mmHg) 75.9 (10.1) 78.1 (11.1) 75.7 (8.3) 78.6 (9.3)
Log TAC 6.28 (2.16) 6.17 (2.17) 7.20 (1.97)* 7.64 (1.31)**
Log CAC 5.43 (1.80) 5.10 (2.44) 5.71 (1.97) 5.66 (2.05)
aPWV (m/s) 6.7 (1.1) 8.8 (0.4) 10.6 (0.5) 13.7 (2.1)
%emphysema on CT 7.2 (9.1) 6.6 (9.3) 11.1 (14.1) 10.3 (11.7)
LDL cholesterol (mmol/L) 2.56 (1.04) 2.66 (0.98) 2.61 (0.93) 2.60 (1.03)
HDL cholesterol (mmol/L) 1.42 (0.53) 1.51 (0.68) 1.52 (0.47) 1.35 (0.41)
Total cholesterol (mmol/L) 4.75 (0.97) 4.86 (1.10) 4.93 (1.18) 4.70 (1.16)
Log hsCRP (mg/L) 0.95 (0.88) 0.76 (0.95) 1.08 (1.02) 1.28 (1.12)
Log fibrinogen (mg/dl) 1.10 (0.21) 0.98 (0.28)* 1.07 (0.29) 1.08 (0.20)
  1. *p<0.05. ** p<0.01 for quartiles compared with quartile 1.
  2. ¥ p<0.01 on multivariate analyses for quartile 4 compared with quartile 1.
  3. All values expressed as mean (standard deviation) unless otherwise specified.
  4. Definition of abbreviations: BMI body mass index, FEV 1 forced expiratory volume in the first 1 second, TAC thoracic aortic calcification, CAC coronary arterial calcification, aPWV aortic pulse wave velocity, CT computed tomography, LDL low density lipoprotein, HDL high density lipoprotein, hsCRP high sensitivity C-reactive protein.