Table 6.
Regression analysis of the observed cross-contamination events in relation to the sink - countertop distance, the perimeter of the food safety triangle, and the interaction sink – countertop distance + the perimeter of the food safety triangle.
| Model 1 |
Cross-contamination events |
|||
|---|---|---|---|---|
| β (SE) | BCa (95% CI) | OR (95% CI) | p | |
| Sink – countertop distance, m* | ||||
| ≤1 | 0a | 1 | ||
| >1 | 2.25 (0.5) | 0.39; 1.88 | 9.51 (3.14; 28.78) | 0.00** |
| Food safety triangle perimeter, m* | ||||
| ≤4 | 0a | 1 | ||
| >4 | 1.11 (0.05) | 0.03; 2.32 | 3.03 (1.13; 8.09) | 0.03*** |
| Interaction of sink – countertop distance with food safety triangle perimeter, m* | ||||
| Sink-countertop ≤1 and safety triangle ≤4 | 0a | 1 | ||
| Sink-countertop >1 and safety triangle >4 | 0.77 (0.03) | 0.19; 1.55 | 2.15 (1.25; 3.7) | 0.00** |
| Sink-countertop >1 and safety triangle ≤4 | 0.64 (0.04) | 0.37; 1.01 | 2.08 (0.91; 4.72) | 0.00** |
| Sink-countertop ≤1 and safety triangle >4 | −0.37 (0.03) | −0.52; −0.24 | 0.69 (0.33; 1.44) | 0.02*** |
β = regression coefficient; SE = standard error; BCa (95% CI) = Bias-corrected accelerated (95% confidence interval) using the bootstrapping technique (1000 iterations); OR (95% CI) = odds ratio (95% confidence interval); a = reference value; *N = 64 participants; **p < 0.01; ***p < 0.05.