Six of the seven public health clinics in San Francisco were selected (the seventh served primarily a younger male population), along with both of the comprehensive public health clinics in western Contra Costa County.
The six clinics in San Francisco and one in Contra Costa(Pittsburg) were of similar size in terms of medical personnel, with four to five physicians and a nurse practitioner.
The Richmond clinic in Contra Costa was some what larger.
Volume of patients varied widely with the estimated number of annual visits for primary care by adult women ranging from 4200 in one of the San Francisco clinics to 37,000 in Richmond