Table 2.

Regression Model for Physician, Practice Setting, and Visit Characteristics Predicting Shared Decision Making Behavior (OPTION Score)

Variables	b	P	95% C.I.
Physician Characteristics
Age	−0.09	<.01	(−0.14 – −0.05)
Ethnicity (Caucasian)	0.82	.10	(−0.15 – 1.79)
Gender	0.66	.15	(−0.25 – 1.57)
Practice Characteristics
HMO	−1.60	.004	(−2.69 – −0.51)
Solo/Private	−0.93	.09	(−2.01 – 0.16)
Academic	0.37	.55	(−0.84 – 1.58)
Specialty (Internal Medicine)	−0.26	.56	(−1.11 – 0.60)
Number of patients seen	−0.04	.59	(−0.19 – 0.11)
Visit Characteristic
Duration of visit	0.08	<.01	(0.05 – 0.12)

Note: Group practice is the reference group for practice setting. Independent variables include the following: physician age, physician ethnicity, physician gender, practice setting (HMO, solo or private practice, academic, group), medical specialty (Internal Medicine, Family Practice), number of patients seen during a typical half day, and the duration of the office visit. The dependent variable is shared decision making behavior.