Comparison of basic characteristics of the asthma-specific JEM and the new OAsJEM
| Asthma-specific JEM19 | New OAsJEM | |
| Number of agents or groups of agents | 22 | 30 |
| HMW sensitiser | 9 | 13 |
| LMW sensitiser | 5 | 10 |
| Mixed exposure | 3 | (13) |
| Microbial exposures | – | 4 |
| Irritants, high peaks | 1 | – |
| Irritants, chronic exposure | 3 | 19 |
| Classification | No/yes | No/medium/high |
| Exposure at low risk for asthma identified | Yes | No |
| Standardised expert re-evaluation step (revising job codes, agents) | Yes | Yes |
| Number of experts to assess each agent | One and consultation of coauthors, and three European occupational epidemiologists for the final version of the method | Three per agent (eight in total) |
HMW, high molecular weight; JEM, job exposure matrix; LMW, low molecular weight; OAsJEM, occupational asthma-specific JEM.