Multivariable Regression for Number of Radioactive SLNs Removed for Each Coefficient
| Coefficient | Effect | SE | Lower 95% limit | Upper 95% limit | P |
| Baseline | 1.06 | 0.097 | 0.87 | 1.24 | 0 |
| Unit dose | 0.13 | 0.072 | −0.01 | 0.27 | 0.069 |
| Heating method | −0.077 | 0.096 | −0.26 | 0.11 | 0.42 |
| Time difference | −0.02 | 0.02 | −0.07 | 0.03 | 0.38 |
| Location in breast tissue for 99mTc-sulfur colloid administration | |||||
| IMZ-LIQ | −0.042 | 0.1 | −0.24 | 0.16 | 0.68 |
| IMZ-LMZ | 0.2 | 0.1 | 0 | 0.41 | 0.049 |
| IMZ-LOQ | 0.019 | 0.089 | −0.16 | 0.19 | 0.83 |
| IMZ-OMZ | 0.032 | 0.079 | −0.12 | 0.19 | 0.69 |
| IMZ-UIQ | −0.022 | 0.079 | −0.18 | 0.13 | 0.78 |
| IMZ-UMZ | 0.013 | 0.078 | −0.14 | 0.17 | 0.87 |
| IMZ-UOQ | −0.023 | 0.072 | −0.16 | 0.12 | 0.75 |
| Unit dose: heating method | −0.1 | 0.1 | −0.3 | 0.1 | 0.31 |
IMZ = inner mid zone; LIQ = lower inner quadrant; LMZ = lower mid zone; LOQ = lower outer quadrant; OMZ = outer mid zone; UIQ = upper inner quadrant; UMZ = upper mid zone; UOQ = upper outer quadrant.