Table 1.

Baseline Characteristics of the Study Sample by Gender of the Usual Source of Care (USOC) (N = 21,365)

CharacteristicsGender of the USOC
Male (n = 16,896)Female (n = 4469)
Percent of total sample79.120.9
Patient characteristics
    Age, yr51.7 (0.2)48.8 (0.4)
    Female50.0 (0.4)70.8 (0.7)
    Race/ethnicity
        Hispanic (any race)8.1 (0.4)8.1 (0.5)
        Non-Hispanic
        White77.4 (0.7)73.6 (0.9)
        Black9.0 (0.4)11.3 (0.6)
        Other5.5 (0.3)7.1 (0.6)
    Education level
         <High school5.4 (0.2)4.3 (0.3)
        Some high school9.7 (0.3)8.9 (0.6)
        High school graduate32.8 (0.5)30.2 (0.9)
        Some college23.6 (0.4)22.7 (0.8)
        College graduate28.4 (0.6)34.0 (1.1)
    Household income level (% FPL)
         <1007.8 (0.3)7.8 (0.5)
        100–1243.4 (0.2)3.5 (0.3)
        125–19912.0 (0.4)11.3 (0.6)
        200–39930.0 (0.5)30.4 (0.9)
         ≥40046.8 (0.7)47.0 (1.1)
    Census region
        Northeast24.5 (1.0)25.8 (1.4)
        Midwest22.0 (1.0)21.1 (1.3)
        South37.0 (1.1)34.6 (1.4)
        West16.5 (1.0)18.5 (1.5)
    Urbanicity (residence in MSA)82.8 (1.0)88.5 (1.0)
    Health insurance
        Private78.2 (0.5)79.9 (0.8)
        Public15.9 (0.4)14.8 (0.7)
        None5.9 (0.2)5.2 (0.4)
    Health status (SF-12)
        Physical Component Summary score48.1 (0.13)49.0 (0.23)
        Mental Component Summary score51.2 (0.10)50.5 (0.19)
    Self-rated health
        Excellent22.8 (0.4)23.6 (0.8)
        Very good33.9 (0.5)34.1 (0.9)
        Good27.9 (0.4)28.3 (0.9)
        Fair11.3 (0.3)10.5 (0.5)
        Poor4.1 (0.2)3.5 (0.3)
    Chronic health conditions*1.09 (0.01)1.00 (0.02)
    Body mass index (kg/m2)
         <204.9 (0.2)6.0 (0.4)
        20–<2529.9 (0.4)32.7 (0.9)
        25–<3036.6 (0.4)32.7 (0.8)
         ≥3028.5 (0.4)28.7 (0.9)
    Smoker18.3 (0.4)16.3 (0.7)
    Skepticism toward medical care1.93 (0.01)1.91 (0.02)
    Survey panel year
        200214.3 (0.5)11.8 (0.7)
        200315.7 (0.5)12.8 (0.7)
        200414.3 (0.4)14.6 (0.8)
        200514.4 (0.5)13.1 (0.7)
        200613.4 (0.4)15.4 (0.8)
        200710.5 (0.5)10.9 (0.9)
        200817.3 (0.7)21.4 (1.2)
USOC characteristics
    Specialty
        Family medicine/general practice73.4 (0.7)71.9 (1.2)
        General internal medicine22.6 (0.6)25.3 (1.1)
        Subspecialty4.0 (0.2)2.8 (0.3)
    Non-Hispanic white82.5 (0.6)74.6 (0.9)
  • Values are provided as mean percentage (standard error). Percentages are population-weighted.

  • * From a count of 8 conditions: diabetes, hypertension, coronary heart disease, myocardial infarction, cerebrovascular disease, asthma, emphysema, and arthritis.

  • FPL, Federal Poverty Level; MSA, metropolitan statistical area, SF-12, 12-item Short Form.