Table 2.
Baseline Characteristics of Trial Participants
| VARIABLE, SUBGROUP | CONTROL (N=28) | INTERVENTION (N=29) |
|---|---|---|
| Age (years) [n (%)] | ||
| <60 | 5 (17.9) | 5 (17.2) |
| 60–70 | 8 (28.6) | 8 (27.6) |
| 70–80 | 9 (32.1) | 10 (34.5) |
| >80 | 6 (21.4) | 6 (20.7) |
| Sex [n (%)] | ||
| Female | 17 (60.7) | 18 (62.1) |
| Male | 11 (39.3) | 11 (37.9) |
| Spouse [n (%)] | ||
| Living alone | 20 (71.4) | 15 (51.7) |
| Living with spouse | 8 (28.6) | 14 (48.3) |
| Smoking status [n (%)] | ||
| Former smoker | 14 (50.0) | 12 (41.4) |
| Never smoker | 0 (0.0) | 1 (3.4) |
| Smoker | 14 (50.0) | 16 (55.2) |
| Number of COPD re-admissions 6 months prior to trial [n (%)] | ||
| 0 | 16 (57.1) | 17 (58.6) |
| 1 | 8 (28.6) | 6 (20.7) |
| >1 | 4 (14.3) | 6 (20.7) |
| FEV1 (L) [median (range)] | 0.7 (0.4–1.8) | 0.7 (0.4–2.1) |
| FVC (L) [median (range)] | 1.6 (0.7–3.4) | 1.5 (0.5–3.4) |
| Respiratory frequency (breaths per minute) | ||
| Median (range) | 20.0 (12–36) | 20.0 (16–25) |
| Missing | 3 | 8 |
| SpO2 (%) [median (range)] | 93.0 (89–99) | 93.0 (86–98) |
| Heart rate (beats per minute) [median (range)] | 88.5 (49–126) | 91.0 (59–130) |
| LTOT long-term oxygen user [n (%)] | ||
| No | 26 (92.9) | 28 (96.6) |
| Yes | 2 (7.1) | 1 (3.4) |
| SGRQ total score | ||
| Median (range) | 65.3 (34.1–85.7) | 74.4 (31.9–84.0) |
| Missing | 1 | 4 |
| CCQ total score | ||
| Median (range) | 3.3 (1.6–5.1) | 4.1 (1.3–5.4) |
| Missing | 2 | 5 |
| EQ-5D summary index | ||
| Median (range) | 0.7 (0.077–1) | 0.7 (0.197–1) |
| Missing | 0 | 3 |
| EQ VAS | ||
| Median (range) | 50.0 (24–89) | 42.5 (10–80) |
| Missing | 1 | 3 |
Data are median (range) or number (%).
CCQ, Chronic COPD Questionnaire; COPD, chronic obstructive pulmonary disease; EQ VAS, EQ visual analog scale; LTOT, long-term oxygen therapy; SpO2, oxygen saturation; SGRQ, St. George Respiratory Questionnaire.