Table 1 Intra class correlations (ICCs) with 95% confidence intervals of the Need for Recovery after work scale over a period of two weeks, one year, and two years in the truck drivers and nurses.
| Two week | One year | Two year | ||||
|---|---|---|---|---|---|---|
| ICC (95% CI) | ICC (95% CI) | ICC (95% CI) | ||||
| Truck drivers (n = 526) | – | – | – | – | ||
| Stable environment (no work related changes) | – | – | – | – | 0.68 (0.59–0.75) | *** |
| Moderately unstable environment (1 work related change) | – | – | – | – | 0.69 (0.59–0.76) | *** |
| Unstable environment (⩾2 work related changes) | – | – | – | – | 0.55 (0.42–0.66) | ** |
| Hospital nurses (n = 144) | – | – | – | – | ||
| Stable environment (no work related changes) | 0.67 (0.48–0.80) | *** | 0.72 (0.55–0.83) | *** | 0.80 (0.67–0.88) | **** |
| Moderately unstable environment (1 work related change) | 0.67 (0.52–0.78) | *** | 0.58 (0.40–0.72) | ** | 0.48 (0.28–0.64) | ** |
| Unstable environment (⩾2 work‐related changes) | 0.65 (0.32–0.84) | *** | 0.69 (0.36–0.87) | *** | 0.30 (0.08–0.62) | * |
*Level of clinical significance is poor; **level of clinical significance is fair; ***level of clinical significance is good; ****level of clinical significance is excellent.