Results of the regression tree analysis by comparing presence and absence of occupational asthma(OA) predicted from the model
| Final diagnosis | OA | No OA | Total |
| OA | 26# | 46 | 72 |
| No OA | 10 | 130# | 140 |
| Total | 36 | 176 | 212# |
#: number of situations in which the model correctly predicted the actual situation (156 out of 212 cases; 74%).