Table 1.
Population Characteristics of Subjects
| TOTAL n = 148 | AT RISK of COPD n = 117 | EXISTING COPD n = 31 | P value | |
|---|---|---|---|---|
| Mean age, years (SD) | 70 (11.1) | 68 (11.2) | 76 (8.5) | < .001 |
| Gender (% female) | 84 (57%) | 59 (50%) | 25 (81%) | .003 |
| Mean body mass index, Kg/m2 (SD) | 27.7 (5.3) | 27.9 (4.9) | 27.2 (6.6) | .474 |
| Median number of co-morbidities [IQR] | 4 [2–5] | 3 [2–5] | 5 [4–9] | < .001 |
| Identify as Aboriginal and/or Torres Strait Islander | 4 (3%) | 1 (1%) | 3 (10%) | .029 |
| English spoken at home | 140 (97%) | 110 (94%) | 30 (97%) | 1.00 |
| Currently married | 80 (54%) | 71 (61%) | 9 (29%) | .002 |
| Currently employed | 55 (37%) | 51 (44%) | 4 (13%) | .002 |
| Completed tertiary or vocational degree | 93 (63%) | 77 (66%) | 16 (52%) | .146 |
| Current smokers | 16 (11%) | 10 (9%) | 6 (20%) | 0.104 |
| Former smokers | 125 (85%) | 107 (92%) | 18 (58%) | < 0.001 |
| Never smoked | 7 (5%) | 0 (0%) | 1 (23%) | N/A |
| Mean CAT Score (SD) | 10.40 (7.0) | 8.92 (6.0) | 15.77 (7.9) | < .001 |
| Median mMRC score [IQR] | 1 [0–1] | 0 [0–1] | 1 [1, 2] | < .001 |
Data are presented as Number (%) unless indicated otherwise
Abbreviations: CAT, COPD Assessment Test, COPD Chronic obstructive pulmonary disease, IQR Interquartile range, mMRC Modified medical research council dyspnoea score, N/A not applicable, SD Standard deviation