Table 2 Baseline measurements of whole‐body vibration (WBV) questionnaires, mean (SD), differences non‐significant if not stated otherwise.
| Experimental group | Control group | 95% CI for difference | |
|---|---|---|---|
| OHS professionals | (n = 18) | (n = 11) | |
| OHS size: serving <20 000 employees | 15% | 17% | |
| Knowledge on WBV (0 to 22) | 12.5 (3.0) | 13.7 (2.9) | (−1.2 to 3.5) |
| Attitude (−36 to +36) | 12.1 (6.1) | 8.2 (8.2) | (−10.2 to 2.5) |
| OHS can play important role in prevention of effects of WBV (agree) | 44% | 45% | |
| Plant managers | (n = 12) | (n = 10) | |
| Knowledge on WBV (0 to 12) | 9.8 (1.3) | 10.8 (0.8) | (0.1 to 1.9)* |
| General company policy onhealth and safety (0 to 4) | 2.3 (1.0) | 2.1 (1.0) | (−1.0 to 0.7) |
| Written annual health and safety plan available? (yes) | 75% | 90% | |
| Company policy on WBV (0 to 11) | 4.9 (2.2) | 5.2 (1.6) | (−1.4 to 1.9) |
| Attention for WBV is included in the annual health and safety plan (yes) | 17% | 30% | |
| Forklift drivers | (n = 158) | (n = 76) | |
| Mean age (years) | 36.9 (10.1) | 36.7 (9.0) | (−2.8 to 2.4) |
| Lower vocational education (%) | 68% | 72% | |
| Experience on the truck (years) | 8.1 (7.7) | 10.1 (7.6) | (−0.1 to 4.1) |
| Knowledge on WBV (0 to 22) | 15.7 (3.0) | 15.8 (2.6) | (−0.7 to 0.8) |
| Driving fast leads to higher vibration level (yes) | 92% | 88% | |
| Attitude on WBV (−42 to +42) | 13.1 (10.0) | 14.9 (10.0) | (−1.0 to 4.7) |
| Driving fast is inevitable (agree) | 50% | 47% | |
| Actual behaviour on WBV (−33 to +33) | 2.8 (9.1) | 1.2 (9.3) | (−4.4 to 1.1) |
| I adjust my seat (often or always) | 77% | 72% | |
| My driving speed is fast (idem) | 68% | 72% | |
| I pay attention to surface conditions | 49% | 50% | |
| Locus of control (−50 to +50) | 31.6 (5.9) | 32.2 (7.5) | (−1.4 to 2.6) |
*Two‐tailed t test, p = 0.04.