TABLE 1

Comparison of Survey Respondents and Nonrespondents and Additional Characteristics of Respondents’ Practices

CharacteristicRespondents (n = 294)Nonrespondents (n = 137)Pa
Age, mean (SD), y47.8 (10.2)47.2 (10.5).60
Female gender, %45.954.0.12
Location of practice, %
    Urban inner city11.97.3
    Urban non–inner city/suburban72.178.1
    Rural16.014.6.29
Region of the country, %
    Midwest20.119.7
    Northeast29.626.3
    South31.639.4
    West18.714.6.40
Practice setting, %
    Private practice86.487.6
    Community or hospital based11.910.2
    Managed care organization1.72.2.83
Proportion of patients with public insuranceb, %
    <25%59.5
    25%–49%16.9
    50%–74%16.6
    ≥75%7.0
Proportion of patients of Hispanic race/ethnicityb, %
    <10%53.3
    10%–24%28.6
    ≥25%18.1
Proportion of patients of black race/ethnicityb, %
    <10%52.8
    10%–24%29.7
    ≥25%17.5
Proportion of patients age 13–18 yearsb, %
    <10%11.8
    10%–24%54.7
    ≥25%33.6
Participates in federal VFC programb, %78.4
  • a Statistical analyses used: χ2, t test, Fisher’s exact, and analysis of variance.

  • b Available for survey respondents only.