Table 1. Sample Characteristics by Primary Care Attribute Score
No.ProportionPCA Score (SE)
Total50,457100%0.66 (0.004)
Age (years)
    18–4424,99146.71%0.57 (0.006)
    45–549,09618.57%0.69 (0.006)
    55–647,29716.18%0.74 (0.005)
    ≥658,01918.54%0.80 (0.004)
Sex
    Male23,05648.49%0.62 (0.005)
    Female26,34751.51%0.71 (0.004)
Race
    White23,16167.84%0.70 (0.005)
    Black9,37811.58%0.62 (0.007)
    Hispanic12,34013.95%0.51 (0.009)
    Other4,5246.64%0.63 (0.013)
Insurance
    Private, any10,50715.39%0.71 (0.004)
    Public only28,63667.42%0.73 (0.006)
    Uninsured10,26017.19%0.37 (0.009)
Education level
    None2733.00%0.49 (0.024)
Elementary only4,2945.53%0.59 (0.012)
    Some HS7,87213.04%0.62 (0.007)
    Completed HS14,9532.99%0.65 (0.006)
    Some college10,64523.97%0.68 (0.006)
    Completed college10,57027.27%0.71 (0.006)
Income
    Poor/negative8,86412.40%0.56 (0.007)
    Near poor2,9044.31%0.60 (0.012)
    Low income8,08613.69%0.60 (0.009)
    Middle income15,23430.54%0.66 (0.007)
    High income14,31539.05%0.73 (0.005)
Region
    North7,61518.42%0.75 (0.008)
    Midwest9,84421.89%0.71 (0.009)
    South18,47336.53%0.61 (0.008)
    West12,99423.17%0.64 (0.008)
Panel
    200710,90519.52%0.68 (0.006)
    200814,94630.99%0.65 (0.007)
    200913,25424.63%0.66 (0.007)
    201011,35224.87%0.67 (0.006)
Health-related variables
    Smoking status
        Nonsmoker34,50380.75%0.68 (0.005)
        Current smoker8,03119.25%0.59 (0.007)
    Seatbelt use
        Always or almost always45,23793.63%0.67 (0.004)
        Less frequently2,9346.37%0.60 (0.012)
    Obesity
        BMI <30 kg/m232,86771.04%0.65 (0.005)
        BMI ≥30 kg/m213,95728.96%0.70 (0.005)
Chronic health conditions (n)
    022,97342.83%0.56 (0.007)
    110,27021.44%0.67 (0.005)
    26,31113.97%0.76 (0.006)
    34,2279.21%0.79 (0.005)
    ≥45,62212.56%0.82 (0.004)
  • * Total number of primary care attribute (PCA) variables endorsed by the respondent divided by total nonmissing PCA variables. Scores ranged between 0 and 1, with a population mean of 0.66.

  • HS, high school; SE, standard error; BMI, body mass index.