Table 2.
Sociodemographic data, results of questionnaires and lung function test according to long-term use of supplementary oxygen
| Variables | With oxygen supplementary n = 20 |
Without oxygen supplementary n = 55 |
p |
|---|---|---|---|
| Age, years (± SD) | 72 ± 7 | 75 ± 8 | 0.12 |
| Gender, male (%) | 18 (90) | 42 (76) | 0.32 |
| BMI, kg/m2 (± SD) | 26 ± 5 | 27 ± 4 | 0.49 |
| Questionnaires | |||
| SGRQ-I, activity (± SD) | 80 ± 22 | 66 ± 23 | 0.01 |
| SGRQ-I, symptoms (± SD) | 61 ± 20 | 43 ± 20 | < 0.0001 |
| SGRQ-I, impact (± SD) | 54 ± 28 | 35 ± 27 | 0.009 |
| SGRQ-I, total (± SD) | 62 ± 22 | 45 ± 22 | 0.003 |
| HADS (± SD) | 8 ± 6 | 10 ± 7 | 0.06 |
| HADS, anxiety (± SD) | 8 ± 6 | 5 ± 4 | 0.04 |
| HADS, depression (± SD) | 6 ± 5 | 5 ± 5 | 0.26 |
| Torvan index (± SD) | 20 ± 5 | 16 ± 6 | 0.002 |
| Lung function test | |||
| FVC, predicted (± SD) | 64 ± 22 | 81 ± 19 | 0.001 |
| DLCO adjusted, predicted (± SD) | 43 ± 14 | 59 ± 20 | 0.003 |
| 6MWT, meters (± SD) | 317 ± 168 | 398 ± 135 | 0.01 |
BMI: Body Mass Index, %FVC: Forced Vital Capacity, predicted, %DLCO: Diffusion Capacity of the Lung for Carbon Monoxide, 6MWT: 6-min walk test