Table 1. Variability in Patient Panel Characteristics
Patient CharacteristicsPatients, % (n = 4019)Clinic Panel Summary (n = 23 clinics)
Full Panels*Restricted Panels
Mean (SD)Median (Range)Mean (SD)Median (Range)
Mean age, years (SD)55.8 (12.9)53.7 (2.9)53.9 (48.3–59.0)53.8 (3.1)53.7 (48.1–60.1)
Minority race11.122.0 (19.8)16.0 (2.0–76.0)21.9 (19.6)16.0 (2.0–76.0)
English-speaking58.860.6 (22.9)58.9 (12.6–100)61.7 (22.2)58.8 (12.6–100)
Spanish-speaking32.133.2 (23.1)28.3 (0–87.4)32.0 (22.2)27.6 (0–87.4)
No Insurance28.628.6 (19.0)30.0 (1.0–57.0)28.5 (18.3)30.0 (2.0–56.0)
Continuous Insurance66.266.4 (21.1)63.0 (34.0–99.0)66.3 (20.6)64.0 (34.0–98.0)
Income <50% of FPL29.436.9 (19.7)31.0 (10.0–87.0)29.6 (13.7)31.0 (6.0–66.3)
  • * 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.

  • Any patient with a race other than “white.” This includes black, Asian, Native American, Pacific Islander, nonwhite, and “other race.”

  • FPL, Federal poverty level; SD, standard deviation.