Table 1.
Baseline demographics, work-, health- and lifestyle variables for all healthcare workers and for the low, moderate and high exposure groups
| All | Low | Moderate | High | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | Mean | SD | % | Mean | SD | % | Mean | SD | % | Mean | SD | % |
| N | 1285 | 321 | 643 | 321 | ||||||||
| Female | 100 | 100 | 100 | 100 | ||||||||
| Age (y) | 46.8 | 11.3 | 45.3 | 11.3 | 46.3 | 11.6 | 49.1 | 10.3 | ||||
| BMI | 24.9 | 4.6 | 25.0 | 4.7 | 25.2 | 4.9 | 24.3 | 3.6 | ||||
| Smokers | 9.0 | 9.3 | 8.9 | 7.8 | ||||||||
| Years in profession | 17.8 | 11.9 | 16.1 | 11.0 | 17.6 | 12.3 | 19.6 | 11.6 | ||||
| Working hours/week | 34.7 | 3.4 | 34.8 | 3.3 | 34.7 | 3.3 | 34.7 | 3.5 | ||||
| LBP within the previous 4 weeks (0–10) | 1.5 | 1.6 | 1.5 | 1.6 | 1.5 | 1.7 | 1.4 | 1.6 | ||||
| Back injuries within the previous 12 months | 0 | 0 | 0 | 0 | ||||||||
| Frequency of patient transfers with more than 1 healthcare worker: | ||||||||||||
| 0/4 | 3.5 | 2.9 | 2.2 | 6.7 | ||||||||
| 1/4 | 19.4 | 12.8 | 25.2 | 14.3 | ||||||||
| 2/4 | 30.8 | 29.1 | 35.0 | 23.9 | ||||||||
| 3/4 | 26.4 | 35.8 | 25.8 | 18.4 | ||||||||
| 4/4 | 19.9 | 19.4 | 11.9 | 36.8 | ||||||||
| Frequency of patient transfers with patients being so self-reliant that no assistive device is necessary: | ||||||||||||
| 0/4 | 17.5 | 32.9 | 13.8 | 9.8 | ||||||||
| 1/4 | 31.3 | 30.4 | 34.7 | 25.4 | ||||||||
| 2/4 | 30.9 | 23.0 | 34.2 | 32.1 | ||||||||
| 3/4 | 20.3 | 13.7 | 17.3 | 32.7 | ||||||||
| 4/4 | 0 | 0 | 0 | 0 | ||||||||
| Level of leisure-time physical activity within the previous 12 months: | ||||||||||||
| Sedentary | 5.1 | 4.7 | 6.1 | 3.7 | ||||||||
| Light exercise > 3/week | 63.4 | 60.4 | 66.1 | 61.4 | ||||||||
| Moderate exercise > 3/week | 28.3 | 30.8 | 25.0 | 31.5 | ||||||||
| Vigorous exercise several times per week | 3.2 | 4.1 | 2.8 | 3.4 | ||||||||