Table 1.
Pre-PR assessment characteristics of participants included in reliability and validity analyses (n=59)
| Characteristics | Mean (SD) or frequency (%) |
|---|---|
| Age (years) | 68.4 (9.8) |
| Males | 28 (48%) |
| Body mass index (kg/m2) | 26.7 (5.9) |
| Number of pharmacologically managed comorbidities | 3 (2) |
| Living arrangements | |
| Home alone | 25 (42%) |
| Home with spouse/partner | 22 (37%) |
| Home with child/grandchild | 8 (14%) |
| Home with friend/other | 3 (5%) |
| Residential care | 1 (2%) |
| FEV1%pred | 47.8 (20.2) |
| FEV1/FVC | 45.0 (15.0) |
| Smoking status | |
| Never smoked | 5 (9%) |
| Current smoker | 12 (20%) |
| Exsmoker | 42 (71%) |
| Long-term oxygen therapy | 7 (12%) |
| Gait aid used during walking tests | 6 (10%) |
| 6MWD (m) | 330.5 (96.0) |
| Best 2MWD (m) | 132.5 (27.3) |
| CRQ n=55 | |
| CRQ-dyspnea | 3.31 (1.23) |
| CRQ-emotional function | 4.44 (1.35) |
| CRQ-mastery, median (IQR) | 4.50 (2.5) |
| CRQ-fatigue | 3.65 (1.31) |
| mMRC scale n=57 | |
| Grade 0 | 3 (5%) |
| Grade 1 | 16 (28%) |
| Grade 2 | 21 (37%) |
| Grade 3 | 12 (21%) |
| Grade 4 | 5 (9%) |
Notes: Grade 0, I only get breathless with strenuous exercise; Grade 1, I get short of breath when hurrying on level ground or walking up a slight hill; Grade 2, on level ground, I walk slower than people of the same age because of breathlessness, or I have to stop for breath when walking at my own pace on the level; Grade 3, I stop for breath after walking ~100 m or after a few minutes on level ground; Grade 4, I am too breathless to leave the house or I am breathless when dressing or undressing.
Abbreviations: CRQ, Chronic Respiratory Questionnaire; FEV1, forced expiratory volume in 1 second; FEV1%pred, percentage predicted FEV1; FVC, forced vital capacity; IQR, interquartile range; 2MWD, 2-minute walk distance; 6MWD, 6-minute walk distance; mMRC, modified Medical Research Council; PR, pulmonary rehabilitation.