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Table 2 Description of study clinics

From: A multi-level system quality improvement intervention to reduce racial disparities in hypertension care and control: study protocol

  Site A Site B Site C Site D Site E Site F
Clinic Characteristics
Primary care providers, n 9 11 11 5 3 6
Patients, n 7,755 4,733 14,887 3,681 5,628 6,161
AA patients, % 65.6 90.1 23.3 18.4 17.7 20.2
White patients, % 28.0 4.4 68.9 77.7 73.3 72.6
AA patients with HTN, n 2,940 2,777 1,493 359 331 593
AA patients with uncontrolled HTN, % 33.1 38.8 29.7 40.1 40.5 42.8
White patients with HTN, n 705 80 4,209 1,362 650 1,477
White patients with uncontrolled HTN, % 29.2 33.9 24.3 34.9 37.1 30.6
Local Characteristics
Medically underserved area+ Yes Yes Yes No Yes No
Median income (in 2011 $US)* $47,472 $36,652 $58,488 $50,459 $47,472 $99,155
% Below poverty line* 19.0 21.0 8.9 10.6 18.2 7.8
% Employed* 55.5 54.8 70.7 60.3 59.0 64.4
% Population AA* 71.7 59.1 19.5 16.9 34.1 27.6
% High school grad or equivalent* 81.4 76.9 85.6 78.7 78.2 92.7
% Vacant housing units* 16.7 19.6 6.7 10.6 14.5 5.6
  1. + By site address.
  2. * By Zip Code Tabulation Area, American Community Survey, 2007–2011. The zip codes representing the residences of the majority of the patients at each site are included.
  3. Abbreviations: AA African American, n number, US United States.