Physical exertion and anger during the hazard and control periods
| Physical exertion | Anger | |
|---|---|---|
| Exposed during hazard period only | 21 (8.1%) | 36 (14.2%) |
| Exposed during control period only | 6 (2.3%) | 17 (6.7%) |
| Exposed during hazard and control periods | 5 (1.9%) | 8 (3.2%) |
| Not exposed | 226 (87.6%) | 192 (75.9%) |