Table 2.

Baseline Specialty Clinic Characteristics Pooled Across Parent Trials and Specialty Clinics

Baseline Specialty Clinic Characteristics	Intervention Specialty Clinics (N = 26) n (%)	Control Specialty Clinics (N = 24) n (%)	P- value++
Specialty clinic geographic location+
Northeast	6 (23.1)	7 (29.2)	0.17
Southeast	8 (30.8)	7 (29.2)
Midwest and Northwest	4 (15.3)	5 (20.8)
Southwest and West	8 (30.8)	5 (20.8)
Percent minorities enrolled in previous trials+†
0%	6 (23.1)	7 (29.2)	0.94
1% –< 10%	1 (3.8)	-
10% –< 20%	6 (23.1)	3 (12.5)
20% or more	9 (34.6)	11 (45.8)
Specialty clinic not in a previous trial or	4 (15.4)	3 (12.5)
data not available
Percent minorities within 30 miles of specialty clinic+,*
17% - < 20%	1 (3.9)	1 (4.2)	0.31
20% –< 40%	14 (53.8)	13 (54.1)
40% –< 60%	7 (26.9)	9 (37.5)
60% or more	4 (15.4)	1 (4.2)
Foreign born population percentage within 30 miles of specialty clinic*
0% –< 10%	7 (26.9)	6 (25.0)	0.85
10% –< 20%	9 (34.6)	11 (45.8)
20% –< 30%	6 (23.1)	2 (8.2)
30% or more	4 (15.4)	5 (20.8)
Non-English speaking population percentage within 30 miles of specialty clinic*,**
0% –< 10%	7 (26.9)	8 (33.3)	0.22
10% –< 20%	7 (26.9)	7 (29.2)
20% –< 30%	5 (19.2)	3 (12.5)
30% or more	7 (26.9)	6 (25.0)
Number of specialty clinic patients seen per week for any trial†,+++
Mean (SD)	78.9 (16.0)	41.2 (6.3)	0.07
Median	46	32.5

⁺Baseline matching criteria used in randomization.

^†Information obtained from Investigator Demographics Form.

⁺⁺P-values were adjusted for stratification by trial except for comparison of means.

⁺⁺⁺P-value was adjusted for clustering and stratification by trial.

^*Information from US Census.

^**Non-English speaking population (speak a language other than English at home).