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The Effect of Short-term Exposure to Air Pollution (April-May 2003) on the Risk of Dying from SARS in Chinese Population.
| API | Number of Deaths | Number of recovered | Total Number of Cases | Case Fatality | RR & 95% CI |
| >100 | 17 | 174 | 191 | 8.90% | 2.18 (1.31–3.65) |
| 75–100 | 269 | 3321 | 3590 | 7.49% | 1.84 (1.41–2.40) |
| <75 | 63 | 1483 | 1546 | 4.08% | 1 |
| Total | 349 | 4978 | 5327 | 6.53% |
