Table 1—

Process and outcome indicators in centers representing the best performers for each indicator and in the overall sample

Best performers (means ± SD or %)Overall sample (means ± SD or %)Intercenter variability (10th to 90th percentile)
Process measures
    A1C ≥1/year96.888.066.0–96.9
    Blood pressure ≥1/year95.577.217.7–98.0
    Lipid profile ≥1/year88.464.615.5–89.9
    Microalbuminuria ≥1 year76.748.10.0–89.7
    Foot examination ≥1/year49.522.40.1–59.3
Outcome measures
    A1C7.0 ± 1.37.4 ± 1.56.9–8.2
        ≤7.0%58.143.120.9–59.5
        ≥8.0%18.229.717.3–52.1
    Systolic blood pressure (mmHg)134 ± 16141 ± 19134–150
    Diastolic blood pressure (mmHg)77 ± 981 ± 1077–85
        ≤130/85 mmHg48.736.644.0–78.0
        ≥140/90 mmHg45.466.220.1–50.6
    LDL cholesterol (mg/dl)110 ± 32118 ± 33113–125
        <100 mg/dl39.529.823.4–35.1
        ≥130 mg/dl26.435.128.3–43.2
  • The last column reports the intercenter variability for the overall sample, adjusted for clustering effect, age, and sex.