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Relative risk (RR) of hospitalization and acute exacerbation
| Beijing (N=139) |
Sanya (N=139) |
|
|---|---|---|
| Hospitalization times (%) | 72 (51.80) | 44 (31.65) |
| Acute exacerbation times (%) | 262 (188.49) | 78 (56.12) |
Notes: RR of hospitalization =51.80/31.65=1.64. RR of acute exacerbation =188.49/56.12=3.36.
