Table 1.

Patient and Physician Characteristics

	Did Not Discuss Dietary Supplements	Discussed Dietary Supplements
		All Studies	1998–1999	2004–2005	2009–2010
Patient characteristics *
N	1122	357	110	152	95
% of all patients	75.8	24.2	22.4	20.7	37.1
Female, % †	60.6	67.5	64.2	71.3	65.3
Age, mean (SD)	53.7 (16.3)	59.5 (13.8)	59.6 (15.0)	56.2 (13.9)	64.7 (10.5)
Race / Ethnicity, %
White	75.8	79.8	85.1	86.3	63.8
Hispanic	7.1	5.2	4.7	3.4	8.5
Black	10.6	7.2	3.7	5.5	13.8
Asian	3.2	3.2	0.9	0.7	9.6
Other	3.3	4.6	5.6	4.1	4.3
Highest level of education completed, % §
High school or less	33.3	25.2	22.4	33.3	15.8
Some college	35.0	35.8	35.5	37.4	33.7
College graduate	31.7	38.7	42.1	29.3	49.5
Specialty of physician seen, % ‡
Internal medicine	29.5	36.4	56.9	4.7	63.2
Family medicine	69.6	59.6	43.1	86.0	36.8
Other	0.9	4.0	0	9.3	0
Physician characteristics
N	14	88	32	36	20
% of all physicians		86.3	94.1	87.8	74.1
Age, mean (SD) §	35.4 (9.1)	43.4 (9.7)	42.7 (8.4)	46.6 (9.1)	38.7 (10.9)
Female, %	50.0	39.1	40.6	31.4	50.0
Specialty, % ‡
Internal medicine	66.7	38.4	53.1	5.9	70.0
Family medicine	33.3	61.6	46.9	91.4	30.0
Race / Ethnicity, % †
White	41.7	71.3	75.0	74.3	60.0
Asian	33.3	17.2	12.5	11.4	35.0
Other	25	11.5	12.5	14.3	5.0
Years in practice, mean (SD) §	4.5 (6.3)	13.5 (9.9)	16.1 (9.0)	13.9 (9.1)	8.8 (11.2)

^*Total of 1479 patient visits to 102 clinicians (490 visits to 34 clinicians in 1998–1999 data, 733 visits to 41 clinicians in 2004–2005 data, and 256 visits to 27 clinicians in 2009–2010 data); statistical significance assessed for those who did / did not discuss dietary supplements

^†p < 0.05

^§p < 0.01

^‡p < 0.001