Table 2. Correlations Between Clinic-Level Percentages of Patients Provided Diabetes-Related Preventive Services and Clinic-Level Patient Panel Characteristics

Clinic Patient Panel Characteristics	Correlation of Clinic-Level Patient Panel Characteristic with Delivery of Diabetic Preventive Services
	Full Patient Panel^*				Restricted Patient Panel^{^†}
	LDL	FLU	Micro-Alb	HbA1c	LDL	FLU	Micro-Alb	HbA1c
Mean age	0.40	0.48^{^‡}	0.14	0.42^{^‡}	0.38	0.48^{^‡}	0.21	0.37
Minority race^{^§}	0.22	0.15	0.73^{^‡}	0.21	0.22	0.22	0.68^{^‡}	0.24
English-speaking	0.11	−0.15	0.05	0.08	0.19	−0.16	0.05	0.11
Spanish-speaking	−0.11	0.07	−0.37	0.03	−0.16	0.04	−0.31	0.02
No insurance	−0.45^{^‡}	−0.61^{^‡}	−0.03	−0.54^{^‡}	−0.44^{^‡}	−0.52^{^‡}	−0.11	−0.48^{^‡}
Continuous insurance	0.46^{^‡}	0.60^{^‡}	0.04	0.55^{^‡}	0.45^{^‡}	0.53^{^‡}	0.08	0.48^{^‡}
Income <50% of FPL	−0.01	0.45^{^‡}	−0.17	0.13	−0.03	0.41^{^‡}	−0.11	0.10

Data are Spearman rank correlation coefficients.
↵* This includes all diabetic patients meeting inclusion criteria of at least 1 visit in 2006 and 2007; 425 patients were included in multiple clinic panels.
↵† Each patient assigned to only one clinic denominator.
↵‡ P < .05.
↵§ Any patient with a race other than white. This includes black, Asian, Native American, Pacific Islander, nonwhite, and “other race.”
FDL, Federal poverty level; FLU, influenza vaccination; HbA1c, hemoglobin A1c monitoring; LDL, low-density lipoprotein cholesterol screening; Micro-Alb, urine microalbumin screening.