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Observation checklist on the identification of hazards.
| Parameter | Mean | S.D |
|---|---|---|
| Falling objects | 1.683 | 0.494 |
| Fire and explosives | 1.509 | 0.501 |
| Vibration | 1.554 | 0.498 |
| Chemicals | 1.458 | 0.499 |
| Noise | 1.472 | 0.500 |
| Dust | 1.504 | 0.493 |
| Diseases | 1.450 | 0.499 |
[1] = Easy [2] = Not easy.
