Frequency and severity of hypoglycemia
| Frequency of glucose level <70 mg/dL (<3.9 mmol/L) (%) | Mild hypoglycemia glucose level 60–69 mg/dL (3.30–3.85 mmol/L) (%) | Moderate hypoglycemia glucose level 50–59 mg/dL (2.80±3.25 mmol/L) (%) | Severe hypoglycemia glucose level <50 mg/dL (<2.80 mmol/L) (%) | |
| Group 1 | 50 | 92 | 8 | 0 |
| Group 2 | 60 | 58 | 19 | 23 |
| Group 3 | 78 | 74 | 22 | 4 |