. Author manuscript; available in PMC: 2021 May 1.

Published in final edited form as: Head Neck. 2020 Jan 10;42(5):974–987. doi: 10.1002/hed.26071

TABLE 3.

Multivariable regression of 4 factorial domains, guideline familiarity, and physician characteristics

	OR (95% Conf. Int.)	P-value
Factors^a
1. Perceived value	3.57 (2.42–5.27)	<.0001
2. External pressures/ norms	1.03 (0.78–1.37)	.821
3. Cost-conscious and holistic	0.74 (0.56–0.97)	.032
4. Innovativeness	1.48 (1.10–1.98)	.009
Guideline familiarity
Unfamiliar with guidelines (vs familiar)	2.78 (1.34–5.76)	.006
Interaction
Guideline	3.55 (1.08–11.67)	.037
familiarity x perceived value
Physician characteristics
Surgeon (vs radiation-oncologist)	1.23 (0.54–2.80)	.620
Fellowship trained	0.58 (0.33–1.04)	.069
Female	2.39 (1.14–5.01)	.021
Every 10 additional years in practice	1.30(1.01–1.67)	.038
Practice setting
Academic tertiary	[Reference]
Academic-affiliate	0.54 (0.22–1.30)	.167
Community hospital	0.74 (0.32–1.69)	.476
Private practice	1.19 (0.52–2.72)	.683
Volume of H&N cancer in practice
1–25% of practice	[Reference]
26–50% of practice	1.40 (0.62–3.13)	.416
>50% of practice	1.19 (0.48–2.95)	.701

See Table A1 for the domains, items, and Cronbach’s alphas for each factor. See Figure 1 for the conceptual model of related domains for each factor.