Table 2.
Hemoglobin A1c and Diabetes Status*
| Diabetes Status | HbA1c <5.7%, No. (%) | HbA1c 5.7–6.4%, No. (%) | HbA1c ≥6.5%, No. (%) | Total |
|---|---|---|---|---|
| Insulin-dependent diabetes mellitus (IDDM) (Type I + Type II-insulin-dependent) | 26 (4%) | 89 (14%) | 513 (82%) | 628 |
| Non-insulin-dependent diabetes mellitus (nIDDM) | 138 (12%) | 458 (40%) | 558 (48%) | 1154 |
| No diabetes mellitus (No DM) | 2304 (61%) | 1338 (36%) | 120 (3%) | 3762 |
The Jonckheere-Terpstra test confirmed a statistically significant trend between diabetes status and HbA1c when treated as ordinal variables (p < 0.001).