| Duration of Diabetes | RBP-4 | Total
| p* value | |
| <100 ng/mL | ≥100 ng/mL | |||
| <5 years | 12 | 0 | 12 |
|
| ≥5 years | 0 | 8 | 8 |
|
| Total | 12 | 8 | 20 | <0.01 |