Expertise about herbs and dietary supplements among diverse health professionals

Table 4 Multivariate regression analysis of factors associated with Knowledge Test %Correct and Confidence Scale Score, and logistic regression analysis or factors associated with the Communications Practices Scale Score.

	Variables in the Final Model for Knowledge Test (%Correct) N = 1268(Score range 0–100)		Variables in the Final Model for Confidence ScaleN = 1201(Scale Range 19–95)		Variables in the Final Model for Communications Practices ScaleN = 852 *(Scale Range 0–10)
	Coefficient (95% CI)	P value	Coefficient (95% CI)	P value	Odds Ratio (95% CI)	P value
Constant	58.4 (56.6, 60.2)	<.001	60.0 (57.8, 62.2)	<.001	Type of Health Professional‡	.013
Professional Group [Students are reference group]
Physician/PA (yes = 1, no = 0)	6.1 (4.8, 7.5)	<.001	3.6 (1.6, 5.7)	.001	2.6 (1.3, 5.1)	.007
Nurse (yes = 1, no = 0)		NS		NS		NS
Nutritionist: (yes = 1, no = 0)	3.8 (2.1, 5.5)	<.001	5.3 (2.4, 8.1)	<.001	3.2 (1.5, 4.4)	.003
Pharmacist (yes = 1, no = 0)	6.6 (4.0, 9.1)	<.001
Had seen patients in past 30 days (yes = 1, no = 0)	2.8 (1.6, 3.9)	<.001			[subjects selected on this basis]
Enrollment period (spring = 1, fall = 0)	-2.7 (-3.9, -1.4)	<.001	-18.3 (-20.4, -16.3)	<.001
Gender (Female = 1, Male = 0)	1.5 (0.24, 2.8)	.002
Training Status (Faculty/In practice = 1, In Training = 0)
Number of HDS Used in a Typical Week	0.46 (0.38, 0.54)	<.001	0.43 (0.29, 0.58)	<.001	1.11 (1.08, 1.14)	<.001
Age [age ≤ 30; represented by 0 in all other categories]						.015
Age 31–40 years (yes = 1, no = 0)	3.8 (2.3, 5.3)	<.001			2.4 (1.3, 4.4)	.006
Age 41–50 years (yes = 1, no = 0)	2.4 (1.1, 3.7)	<.001	4.8 (2.6, 5.7)	<.001	1.9 (1.0, 3.4)	.048
Age >50 years (yes = 1, no = 0)			2.4 (0.15, 4.7)	.037
R-square for the final model	.251		.267		.155

* This analysis was performed for enrollees who had seen patients in the past 30 days.
† Models were determined using backward conditional multiple regression, with P≤ .05 required for variable retention.

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