| November 2004 – October 2005 | Frequency |
| Information technology modifications | 5 |
| Education and training | 5 |
| Policy development/modification | 4 |
| Development of standardised reference materials | 3 |
| Modification of committee structure | 2 |
| Modification of medical documentation form | 2 |
| QI abstracts—American College of Physicians and American Thoracic Society | 1 |
| Development of hospital-wide interdisciplinary team to investigate similar cases | 1 |
QI, quality improvement.