| Univariable (95% CI) | P | Multivariable (95% CI) * | P |
---|---|---|---|---|
Acute exacerbation (n) |  |  |  |  |
  ≤ 2 | 1 | – | 1 | – |
  > 2 | 2.238 (1.169, 4.288) | 0.010 | 2.262 (1.031, 4.243) | 0.044 |
Hospitalization (n) | Â | Â | Â | Â |
  ≤ 2 | 1 | – | 1 | — |
  > 2 | 1.276 (1.134, 1.564) | 0.001 | 4.053 (0.423, 38.809) | 0.254 |
Hospital stays (d) | Â | Â | Â | Â |
  ≤ 8 | 1 | – | 1 | – |
 8 ~ 15 | 2.208 (0.937, 5.203) | 0.132 | 0.672 (0.010, 46.030) | 0.612 |
  ≥ 15 | 3.224 (1.382, 7.521) | 0.005 | 2.352 (1.112, 6.597) | 0.022 |
Death | Â | Â | Â | Â |
 No | 1 | – | 1 | – |
 Yes | 1.689 (1.057, 2.698) | 0.021 | 2.119 (1.131, 7.113) | 0.045 |