Table 3—

Bivariate and adjusted odds of accurately knowing one’s most recent HbA1c value

%Odds ratios (95% CI)
UnadjustedAdjusted for other patient characteristics
Race
    White27ReferentReferent
    Black190.65 (0.37–1.11)0.51 (0.22–1.18)
    Latino80.23 (0.18–0.65)0.51 (0.14–1.48)
    Other371.65 (0.84–3.25)1.21 (0.55–2.67)
Education
    Less than high school7ReferentReferent
    High school223.49 (1.74–6.99)2.37 (1.09–5.15)
    Some college366.91 (3.65–13.1)3.72 (1.78–7.78)
Annual income
    <$10,00013ReferentReferent
    $10,001–30,000201.62 (0.90–2.90)1.11 (0.55–2.23)
    >$30,000404.39 (2.43–8.02)1.81 (0.86–3.82)
Diabetes duration
    ≤3 years25ReferentReferent
    ≥4 years261.10 (0.61–1.52)1.32 (0.78–2.29)
Medications
    Oral only26ReferentReferent
    Insulin ± oral210.75 (0.48–1.14)0.87 (0.50–1.51)
    No medications301.22 (0.60–2.49)0.82 (0.34–2.01)
Health system
    AMC36ReferentReferent
    VA160.35 (0.23–0.53)0.55 (0.33–0.92)
    Inner-city140.29 (0.16–0.52)0.70 (0.26–1.89)
Whether diabetes doctor answers questions fully
    Did not strongly agree21ReferentReferent
    Strongly agree301.55 (1.05–2.29)1.60 (1.03–2.48)
  • The multivariable logistic models included all the variables listed in the table and also adjusted for patients’ age, sex, number of outpatient visits, and having a regular doctor, none of which were associated with knowing one’s most recent HbA1c. Accurately knowing one’s last HbA1c was defined as accurately reporting (within a ±0.5 range) one’s last HbA1c value.