Table 2.

Regression Model 1: Adjusted Relationships between Individual and Practice Characteristics and Glycated Hemoglobin*

Parameter Estimate95% CI
Patient characteristics
    Female0.240.13 to 0.36
    Age (years)
        25–40
        41–55−0.02−0.71 to 0.67
        56–64−0.04−0.4173 to 0.65
        65–74−0.25−0.95 to 0.45
         >74−0.47−1.17 to 0.23
    Race/ethnicity
        White
        Black0.330.12 to 0.54
        Hispanic0.18−0.04 to 0.39
        Asian0.14−0.15 to 0.44
        Other0.160.02 to 0.30
    Primary language
        English
        Not English0.04−0.24 to 0.33
    LDL cholesterol0.0070.005 to 0.008
    Urine microalbumin/creatinine0.00020.0001 to 0.0003
    Insurance type
        Fee for service
        HMO−0.29−0.77 to 0.20
        MediCal−0.11−0.67 to 0.46
        Medicare−0.34−0.84 to 0.15
        Other−0.95−1.74 to −0.17
        PPO−0.26−0.77 to 0.26
        Self pay−0.75−1.58 to 0.84
        Workman's compensation−2.37−3.62 to −1.12
    Distance to clinic−0.005−0.015 to 0.005
Practice-related characteristics
    PCN (vs medical center)−0.37−0.54 to −0.20
    Specialty
        Family practice
        Internal medicine−0.10−0.25 to 0.06
        Family practice/internal medicine Combined0.16−0.02 to 0.33
  • * Census tract number and socioeconomic status were included in the model as random effects.

  • Reference.

  • LDL, low-density lipoprotein; HMO, health management organization; PPO, preferred provider organization; PCN, primary care network.