Differences between readmitted and non-readmitted patients within 28 days
| 28-day readmission | Non-readmitted at 28 days | ||
|---|---|---|---|
| N=27 | N=93 | p Value | |
| Age (years) | 75 (9) | 68 (9) | 0.001 |
| MRC dyspnoea grade | 5 (4–5) | 4 (3–5) | 0.013 |
| Admission frequency (/12 months) | 1 (1–3) | 0 (0–2) | 0.006 |
| Admission haemoglobin (g/dL) | 13.1 (1.8) | 14.0 (1.7) | 0.017 |
| ΔEMGpara%max (%) | +1.5 (8.4) | −2.4 (7.2) | 0.018 |
| ΔNRDI (/min) | +28 (217) | −64 (189) | 0.032 |
| ΔModified Borg scale | −2 (−2.5 to −2) | −1 (−3 to −1) | 0.58 |
| ΔCAT | −7 (−12 to 0) | −5 (−9 to 0) | 0.30 |
| ΔRespiratory rate (/min) | −3.2 (5.3) | −2.6 (4.0) | 0.50 |
Values are expressed as mean (SD) or median (IQR).
CAT, COPD Assessment Test; EMGpara%max, 1 min mean magnitude of rectified inspiratory parasternal EMG activity normalised to a maximal manoeuvre; MRC, Medical Research Council; NRDI, Neural Respiratory Drive Index.