TABLE A2.
Multivariable regressions of physician characteristics predicting factor scores
| 1. Perceived value |
2. External pressures |
3. Cost-conscious and holistic |
4. Innovativeness |
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|---|---|---|---|---|---|---|---|---|
| Factor | Coeff (95% conf. int.) | P-value | Coeff (95% conf. int.) | P-value | Coeff (95% conf. int.) | P-value | Coeff (95% conf. int.) | P-value |
| Guideline knowledge | ||||||||
| Innacurate guideline knowledge (vs accurate) | 0.27 (0.07 to 0.47) | .010 | 0.02 (−0.22 to 0.27) | .846 | −0.07 (−0.33 to 0.18) | .581 | 0.07 (−0.18 to 0.33) | .562 |
| Estimated survival benefit | ||||||||
| Estimated % patients with survival advantage | ||||||||
| <10% | (Reference group) | (Reference group) | (Reference group) | (Reference group) | ||||
| 10% | 0.61 (0.38 to 0.84) | <.0001 | 0.12 (−0.16 to 0.41) | .392 | 0.11 (−0.18 to 0.41) | .457 | −0.10 (−0.39 to 0.20) | .523 |
| 11–20% | 1.28 (1.05 to 1.51) | <.0001 | −0.04 (−0.32 to 0.24) | .767 | −0.19 (−0.48 to 0.11) | .211 | −0.05 (−0.34 to 0.24) | .739 |
| >20% | 1.40 (1.16 to 1.64) | <.0001 | 0.01 (−0.28 to 0.31) | .942 | 0.02 (−0.28 to 0.33) | .876 | 0.04 (−0.27 to 0.34) | .819 |
| Physician characteristics | ||||||||
| Surgeon (vs rad-onc) | 0.00 (−0.26 to 0.26) | .978 | −0.12 (−0.43 to 0.20) | .458 | 0.05 (−0.28 to 0.38) | .751 | −0.09 (−0.41 to 0.23) | .586 |
| Fellowship trained | 0.06 (−0.12 to 0.23) | .529 | −0.02 (−0.24 to 0.19) | .824 | −0.03 (−0.26 to 0.19) | .771 | 0.18 (−0.04 to 0.40) | .104 |
| Female | 0.13 (−0.10 to 0.35) | .273 | −0.30 (−0.58 to −0.02) | .031 | 0.23 (−0.06 to 0.52) | .116 | −0.58 (−0.86 to −0.29) | <.0001 |
| Every 10 additional years in practice | 0.06 (−0.01 to 0.14) | .095 | −0.21 (−0.29 to −0.11) | <.0001 | 0.04 (−0.06 to 0.13) | .465 | −0.01 (−0.10 to 0.09) | .902 |
| Practice setting | ||||||||
| Academic tertiary | (Reference group) | (Reference group) | (Reference group) | (Reference group) | ||||
| Academic affiliate | −0.06 (−0.32 to 0.20) | .644 | −0.04 (−0.35 to 0.28) | .815 | 0.02 (−0.31 to 0.34) | .926 | 0.04 (−0.28 to 0.36) | .820 |
| Community hospital | 0.01 (−0.25 to 0.26) | .957 | 0.24 (−0.08 to 0.55) | .137 | 0.12 (−0.20 to 0.45) | .465 | 0.22 (−0.10 to 0.54) | .179 |
| Private practice | 0.07 (−0.19 to 0.33) | .576 | 0.33 (0.02 to 0.65) | .040 | 0.16 (−0.17 to 0.48) | .354 | 0.28 (−0.05 to 0.60) | .093 |
| Volume of H&N cancer in practice | ||||||||
| 1–25% of practice (Reference group) | Reference group) | (Reference group) | (Reference group) | |||||
| 26–50% of practice | −0.08 (−0.34 to 0.17) | .524 | −0.15 (−0.46 to 0.17) | .359 | 0.11 (−0.21 to 0.44) | .495 | 0.06 (−0.25 to 0.38) | .692 |
| >50% of practice | −0.18 (−0.46 to 0.10) | .214 | 0.03 (−0.32 to 0.37) | .87 | 0.40 (0.04 to 0.76) | .029 | −0.04 (−0.40 to 0.31) | .808 |