Table 4 Outcomes (repeat COPD exacerbation and mortality) in the three months following COPD exacerbation by FEV1
Outcome | FEV1 severity | Number of events (numerator) | Incidence rate per 10,000 person years | Age and sex adjusted hazard ratio |
|---|---|---|---|---|
Repeat COPD exacerbation | Mild | 123 | 12.2 (10.2–14.5) | 1.00 |
Moderate | 256 | 10.9 (9.6–12.3) | 0.90 (0.72–1.11) | |
Severe | 287 | 14.6 (13.0–16.4) | 1.22 (0.99–1.51) | |
Very severe | 129 | 17.8 (15.0–21.2) | 1.51 (1.18–1.94) | |
Unknown | 103 | 12.4 (10.2–15.0) | 1.01 (0.78–1.32) | |
All cause mortality | Mild | 75 | 4.9 (3.9–6.1) | 1.00 |
Moderate | 103 | 2.9 (2.4–3.5) | 0.60 (0.45–0.81) | |
Severe | 192 | 6.4 (5.5–7.4) | 1.26 (0.97–1.65) | |
Very severe | 107 | 9.6 (8.0–11.6) | 2.14 (1.59–2.88) | |
Unknown | 166 | 13.2 (11.3–15.3) | 2.23 (1.69–2.93) |