Skip to main content

Table 1 Baseline characteristics of subjects with chronic obstructive pulmonary disease (COPD) referred to PR and consented for the study, divided into those who did and did not complete PR

From: Pulmonary rehabilitation, physical activity and aortic stiffness in COPD

Subjects DemographicsTotal population (102)Completed PR (54)Not completed (48)p-value
Age (years)71.31 ± 9.0672.71 ± 8.4869.71 ± 9.540.10
 Male59 (58%)34 (63%)25 (52%)0.27
 Female43 (42%)20 (37%)23 (48%)
 Active smoker30 (29%)12 (22%)18 (37%)0.09
 Ex-smokers72 (71%)42 (78%)30 (63%)
 Smoking history (pack-years)45 (27–63)47 (23–60)44 (31–66)0.49
Body composition
 Body Mass Index (kg/m2)26.70 ± 6.0926.47 ± 6.1326.99 ± 6.100.67
Pulmonary function
 FEV1 (L)1.26 ± .411.23 ± 0.411.51 ± 0.580.01
 FEV1 (% predicted)50.69 ± 16.2950.47 ± 17.5560.29 ± 19.390.01
 FEV1/FVC %47.51 ± 11.8849.20 ± 12.2858.07 ± 10.93< 0.01
Haemodynamic
 Aortic pulse wave velocity (m/s)10.84 ± 2.2911.34 ± 2.3310.05 ± 2.030.01
 Systolic pressure (mmHg)138.75 ± 18.33139.91 ± 19.04137.29 ± 17.760.47
 Diastolic pressure (mmHg)80.15 ± 13.4880.38 ± 14.1379.98 ± 12.970.91
 Mean arterial pressure (mmHg)98.68 ± 15.94100.19 ± 12.9896.93 ± 18.850.31
 Pulse pressure (mmHg)77.70 ± 14.5976.94 ± 16.9178.73 ± 11.5450.52
Functional outcomes (pre-PR)
 ISWT (m)254.32 ± 118.41254.1 ± 116.6254.6 ± 122.10.98
 mMRC grade3 (2–4)3 (2–4)3 (2–4)0.65
 CAT19.96 ± 8.0618.72 ± 6.7221.56 ± 8.780.08
 Anxiety scores (HADS)5 (2–7)5 (2–7)6 (3–11)0.06
 Depression scores (HADS)5 (2–6)5 (2–6)6 (4–8)0.06
CV risks determinants
 DiabetesYes: 18 (18%)Yes: 7 (13%)Yes: 9 (19%)0.37
 HypertensionYes: 54 (54%)Yes: 29 (46%)Yes: 25 (52%)0.56
 HyperlipidaemiaYes: 44 (43%)Yes: 24 (44%)Yes: 20 (42%)0.78
 Ischemic heart diseaseYes: 5 (5%)Yes: 1 (2%)Yes: 4 (8%)a
 Myocardial infarctionYes: 4 (4%)Yes: 3 (6%)Yes: 1 (2%)a
 Peripheral arterial diseaseYes: 7 (7%)Yes: 4 (7%)Yes: 3 (6%)a
 Heart failureYes: 7 (7%)Yes: 2 (4%)Yes: 5 (10%)a
 Atrial fibrillationYes: 13 (12%)Yes: 9 (17%)Yes: 4 (8%)a
 StrokeYes: 10 (10%)Yes: 3 (6%)Yes: 7 (15%)a
  1. Data are presented as mean (SD), median (IQR) or n (%) as appropriate. FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, ISWT incremental shuttle walk test, mMRC modified Medical Research Council, HADS hospital anxiety and depression score.a too few for comparison