Table 3—

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

%Odds ratios (95% CI)
Race
White 27 Referent Referent
Black 19 0.65 (0.37–1.11) 0.51 (0.22–1.18)
Latino 0.23 (0.18–0.65) 0.51 (0.14–1.48)
Other 37 1.65 (0.84–3.25) 1.21 (0.55–2.67)
Education
Less than high school Referent Referent
High school 22 3.49 (1.74–6.99) 2.37 (1.09–5.15)
Some college 36 6.91 (3.65–13.1) 3.72 (1.78–7.78)
Annual income
<$10,000 13 Referent Referent$10,001–30,000 20 1.62 (0.90–2.90) 1.11 (0.55–2.23)
>$30,000 40 4.39 (2.43–8.02) 1.81 (0.86–3.82) Diabetes duration ≤3 years 25 Referent Referent ≥4 years 26 1.10 (0.61–1.52) 1.32 (0.78–2.29) Medications Oral only 26 Referent Referent Insulin ± oral 21 0.75 (0.48–1.14) 0.87 (0.50–1.51) No medications 30 1.22 (0.60–2.49) 0.82 (0.34–2.01) Health system AMC 36 Referent Referent VA 16 0.35 (0.23–0.53) 0.55 (0.33–0.92) Inner-city 14 0.29 (0.16–0.52) 0.70 (0.26–1.89) Whether diabetes doctor answers questions fully Did not strongly agree 21 Referent Referent Strongly agree 30 1.55 (1.05–2.29) 1.60 (1.03–2.48) %Odds ratios (95% CI) UnadjustedAdjusted for other patient characteristics Race White 27 Referent Referent Black 19 0.65 (0.37–1.11) 0.51 (0.22–1.18) Latino 0.23 (0.18–0.65) 0.51 (0.14–1.48) Other 37 1.65 (0.84–3.25) 1.21 (0.55–2.67) Education Less than high school Referent Referent High school 22 3.49 (1.74–6.99) 2.37 (1.09–5.15) Some college 36 6.91 (3.65–13.1) 3.72 (1.78–7.78) Annual income <$10,000 13 Referent Referent
$10,001–30,000 20 1.62 (0.90–2.90) 1.11 (0.55–2.23) >$30,000 40 4.39 (2.43–8.02) 1.81 (0.86–3.82)
Diabetes duration
≤3 years 25 Referent Referent
≥4 years 26 1.10 (0.61–1.52) 1.32 (0.78–2.29)
Medications
Oral only 26 Referent Referent
Insulin ± oral 21 0.75 (0.48–1.14) 0.87 (0.50–1.51)
No medications 30 1.22 (0.60–2.49) 0.82 (0.34–2.01)
Health system
AMC 36 Referent Referent
VA 16 0.35 (0.23–0.53) 0.55 (0.33–0.92)
Inner-city 14 0.29 (0.16–0.52) 0.70 (0.26–1.89)
Whether diabetes doctor answers questions fully
Did not strongly agree 21 Referent Referent
Strongly agree 30 1.55 (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.

Close Modal