Incidents per 1000 tests
| 1996–2000 | 2001–2005 | 2006–2010 | 2011–2015 | 2016 | Total | |
| HVPT | 0.00 | 5.63 | 8.55 | 0.00 | –* | 3.44 |
| CPET | 0.00 | 1.87 | 4.43 | 5.10 | 0.00 | 2.21 |
| PC20 | 0.00 | 2.11 | 2.72 | 2.89 | 3.72 | 1.88 |
| HIT | 0.00 | 2.14 | 2.54 | 0.00 | 5.73 | 1.55 |
| pH | 0.00 | 2.06 | 3.11 | 1.27 | 0.00 | 1.40 |
| Routine PFT | 0.09 | 0.61 | 0.70 | 0.46 | 0.54 | 0.48 |
*No HVPTs were performed in 2016. Note: no incidents were recorded between 1997 and 1998.
CPET, cardiopulmonary exercise test; HIT, hypoxic inhalation test; HVPT, hyperventilation provocation test; PC20, histamine provocation test; pH, oesophageal pH; routine PFT, routine pulmonary function test.