. Author manuscript; available in PMC: 2014 Jun 1.

Published in final edited form as: Patient Educ Couns. 2013 Mar 7;91(3):287–294. doi: 10.1016/j.pec.2013.01.021

Table 5.

Bivariate relationships and multivariate model predicting Supplement Communication Index ^⋄

Independent Variables	Mean Score	Correlation Coefficient	b-coefficient for multivariate relationship
Type of Supplement
Vitamins or minerals	0.99 (1.10) ^*
Non-vitamin non-mineral dietary supplements	1.47 (1.23) ^*		0.39 ^*
Patient age		−0.0004	−0.001
Female patient	1.09 (1.17)		−0.04
Male patient	1.22 (1.14)		N/A
Race / Ethnicity
White	1.11 (1.14)		N/A
Hispanic	1.31 (1.31)		0.23
African-American	1.20 (1.07)		0.08
Asian	1.57 (1.41)		0.47 ^†
Other	1.12 (1.27)		−0.05
Educational achievement
High school or less	1.08 (1.00)		−0.08
Some college	1.08 (1.20)		0.02
College graduate	1.19 (1.19)		N/A
Physician age		−0.004	−0.02
Female physician	1.02 (1.07)		−0.16
Male physician	1.19 (1.19)		N/A
White physician	1.12 (1.17)		N/A
Non-white physician	1.15 (1.13)		−0.04
Physician years in practice		−0.001	0.01
Year of visit
1998–1999	1.24 (1.07)		0.02
2004–2005	1.07 (1.14)		0.05
2009–2010	1.09 (1.24)		N/A
New medication prescribed	1.22 (1.19)		−0.08
No new medication prescribed	1.11 (1.15)		N/A
Number of dietary supplements discussed		−0.04	−0.03
Patient-initiated discussion	1.15 (0.06)		−0.16
Physician-initiated discussion	1.11 (0.06)		N/A
Context of discussion
Medication reconciliation	0.77 (1.06) ^*		−0.39 ^‡
Medication initiation	1.42 (1.30)		0.14
Treatment plan or symptom	1.57 (1.08) ^*		0.36 ^‡
Other context	1.11 (1.18)		N/A

p<=0.001

^†

p < 0.05

^‡

p < 0.01

^⋄

Supplement Communication Index score ranges from 0 to 5. n=693; R² = 0.13. Independent variables have reference groups as follows: patient age: per decade; female patient: male; race/ethnicity: white; educational achievement: college graduate; physician age: per decade; female physician: male physician; non-white physician: white physician; year of visit: 2009–2010; new medication prescribed: no new medication prescribed; number of dietary supplements discussed: per dietary supplement; patient-initiated discussion: physician-initiated discussion; context of discussion: other context