Table 2.
Multiple Regression Analysis
| Results – Formaldehyde | ||
| Surgeons | β (coefficient) | p-value |
| Constant | 4.578 | 0.000 |
| Evacuation system used | -1.647 | 0.000 |
| Decision variable (adjusted R2) | 0.253 | |
| Surgical assistants | β (coefficient) | p-value |
| Constant | 4.684 | 0.000 |
| Evacuation system used | -1.506 | 0.001 |
| Decision variable (adjusted R2) | 0.158 | |
| Anesthetists | β (coefficient) | p-value |
| Constant | 4.899 | 0.000 |
| Evacuation system used | -1.932 | 0.000 |
| Total mastectomy | -0.952 | 0.014 |
| Decision variable (adjusted R2) | 0.329 | |
| Scrub nurses | β (coefficient) | p-value |
| Constant | 4.228 | 0.000 |
| Evacuation system used | -1.117 | 0.025 |
| Decision variable (adjusted R2) | 0.066 | |
| Circulating nurses | β (coefficient) | p-value |
| Constant | 3.353 | 0.000 |
| Evacuation system used | -1.182 | 0.007 |
| Anesthetic | 1.013 | 0.025 |
| Decision variable (adjusted R2) | 0.144 | |
| Results - Acetaldehyde | ||
| Surgeons | β (coefficient) | p-value |
| Constant | 12.439 | 0.000 |
| Evacuation system used | -2.69 | 0.003 |
| Operating time (min.) | -0.039 | 0.009 |
| Surgeon’s years of experience | -0.086 | 0.043 |
| Decision variable (adjusted R2) | 0.218 | |
| Surgical assistants | β (coefficient) | p-value |
| Constant | 12.338 | 0.000 |
| Fresh air volume | -0.005 | 0.010 |
| Operating time (min.) | -0.024 | 0.034 |
| Evacuation system used | -1.376 | 0.049 |
| Decision variable (adjusted R2) | 0.198 | |
| Anesthetists | β (coefficient) | p-value |
| Constant | 6.915 | 0.000 |
| Evacuation system used | -3.99 | 0.000 |
| Anesthetic | 1.921 | 0.014 |
| Decision variable (adjusted R2) | 0.257 | |
| Scrub nurses | β (coefficient) | p-value |
| Constant | 5.957 | 0.000 |
| Evacuation system used | -1.765 | 0.014 |
| Decision variable (adjusted R2) | 0.082 | |
| Circulating nurses | β (coefficient) | p-value |
| Constant | 10.084 | 0.000 |
| Operating time (min.) | -0.041 | 0.024 |
| Decision variable (adjusted R2) | 0.067 | |