Table 4.

Correlation Between Primary Care Physician Reported Access and Clinical Performance

Clinical Measure	Low Access Clinics*		Moderate Access Clinics*		High Access Clinics*		Spearman Correlation†
	Nclinic	Screening Rate, %	Nclinic	Screening Rate, %	Nclinic	Screening Rate, %	ρ	P value
Breast cancer screening	15	35%	25	43%	20	46%	0.27	0.04
Diabetic eye exams	15	50%	27	48%	18	55%	0.24	0.07

*Clinics separated into three groups based on the proportion of physicians at each clinic reporting the targeted health service is “almost always” available. This proportion was divided into 3 groups: <25th percentile (low access clinics), 25th to 75th percentile (moderate access clinics), and >75th percentile (high access clinics)

†Spearman correlation coefficient between proportion of physicians reporting service “almost always” available and performance rate for each clinic