Table 1 Study Conditions
From: Protocol of a randomized controlled trial of hearing protection interventions for farm operators
Group | Observation | Intervention | Observations | ||
|---|---|---|---|---|---|
| Â | Â | Interactive web information | Static web information | HPDs | Â |
1 | Pretest | X | Â | X | Post-tests at 6 & 12 months |
2 | Pretest | X | Â | Â | Post-tests at 6 & 12 months |
3 | Pretest | Â | X | X | Post-tests at 6 & 12 months |
4 | Pretest | Â | X | Â | Post-tests at 6 & 12 months |
5 | Pretest | Â | Â | X | Post-tests at 6 & 12 months |