Table 1.

Baseline Characteristics of Patients

CharacteristicATSM (n=112)Usual Care (n=114)PValue
ATSM = Automated telephone self-management support; BMI = body mass index; GED = general equivalency diploma; HbA1c=hemoglobin A1c.
a Health literacy based on scores on the Short Test of Functional Health Literacy in Adults (s-TOF-HLA), except for Cantonese patients (n = 39), for whom these scores were not obtained. Health literacy was defined as inadequate (0–16), marginal (17–22), or adequate (23–36).
b Fisher exact test.
Age, mean (SD), years55.9 (12.7)55.8 (11.8).9
Women, %58.055.3.4
Ethnic group, %
    Asian26.821.9.5
    African American14.323.7
    Hispanic white46.448.3
    Non-Hispanic white9.85.3
    Other/unknown2.70.9
Language, %
    English46.444.71.0
    Spanish42.043.9
    Cantonese11.611.4
Health literacy, %a
    Inadequate43.954.0.1
    Marginal7.114.0
    Adequate49.032.0
Education
    Some high school51.855.3.6
    High school graduate/GED14.319.3
    Some college33.925.4
Insurance, %
    Medi-Cal20.516.7.9
    Medicare19.621.9
    Uninsured50.054.4
    Other9.87.0
Annual income, %
    <$5,00026.927.3.4
    $5,000–$10,00031.530.3
    $10,000–$20,00018.029.3
    $20,000–$30,00014.67.1
    >$30,0009.06.0
Diabetes duration, mean (SD), years9.1 (7.3)10.4 (8.1).3
Diabetic educator visit year prior, %58.053.5.4
Nutritionist visit year prior, %34.837.7.7
Diabetes treatment regimen, %
    Diet only0.02.7.8b
    Oral agents only63.459.8
    Insulin only10.79.8
    Insulin and oral agents25.927.7
Poor or fair health, %74.178.1.8
HbA1c, mean (SD), %9.3 (1.8)9.8 (2.0).2
Blood pressure, mean (SD), mm Hg
    Systolic137.8 (21.5)138.7 (20.7).1
    Diastolic75.7 (12.1)77.8 (11.2).2
BMI, mean (SD), kg/m230.3 (6.7)32.3 (13.5).3