Table 2.
Mean A1C by predictor category.
| Variable | Category | Mean (SD) A1C (%) | Mean (SD) A1C (mmol/mol) | F value (p-value) |
|---|---|---|---|---|
| Sex | Woman | 6.51 (1.72) | 48 (18.8) | 9.71 (.0019) |
| Man | 6.30 (1.85) | 45 (20.2) | ||
| Age Category | 40-49 years | 6.28 (1.66) | 45 (18.2) | 30.57 (<.0001) |
| 50-65 years | 6.72 (1.87) | 50 (20.4) | ||
| > 65 years | 6.75 (1.45) | 50 (15.9) | ||
| Race | White | 6.25 (1.52) | 45 (16.7) | 55.02 (<.0001) |
| African-American | 6.70 (1.90) | 50 (20.8) | ||
| Education | Less than high school | 6.66 (1.86) | 49 (20.3) | 9.02 (.0001) |
| High school | 6.45 (1.71) | 47 (18.7) | ||
| More than high school | 6.34 (1.64) | 46 (17.9) | ||
| Smoking status | Non-smokers | 6.59 (1.82) | 49 (19.9) | 19.74 (<.0001) |
| Smokers | 6.31 (1.59) | 45 (17.4) | ||
| BMI | Under 25 kg/m2 | 6.03 (1.41) | 42 (15.4) | 65.61 (<.0001) |
| 25 to 29 kg/m2 | 6.34 (1.65) | 46 (18.1) | ||
| 30 kg/m2 or higher | 6.81 (1.88) | 51 (20.5) | ||
| Depression diagnosis | No | 6.50 (1.79) | 48 (19.6) | .33 (.5634) |
| Yes | 6.44 (1.62) | 47 (17.7) | ||
| CESD-10 score category | No depression | 6.43 (1.66) | 47 (18.1) | .71 (.5458) |
| Mild depression | 6.53 (1.78) | 48 (19.5) | ||
| Moderate depression | 6.53 (1.87) | 48 (20.5) | ||
| Severe depression | 6.57 (1.90) | 48 (20.8) | ||
| Diabetes status | No diagnosis | 5.96 (0.87) | 42 (9.6) | 1757.47 (<.0001) |
| Diagnosis | 8.71 (2.57) | 72 (28.1) | ||
| Antidepressant subclass | SNRI | 6.55 (1.60) | 48 (17.5) | 1.21 (.2995) |
| SSRI | 6.41 (1.67) | 47 (18.2) | ||
| TCA | 6.20 (0.82) | 44 (9.0) | ||
| Other | 6.25 (1.72) | 45 (18.8) | ||
| Multiple | 7.00 (2.47) | 53 (27.0) | ||
| None | 6.49 (1.75) | 47 (19.1) | ||
| Sickle cell | Yes | 6.01 (0.75) | 42 (8.2) | |
| No | 6.48 (1.74) | 47 (19.0) | ||
| Overall | 6.48 (1.74) | 47 (19.0) |
ANOVA performed using log A1C. Individuals with sickle-cell anemia diagnosis excluded from models.