| variables | N | GA/HbA1C | |
| Spearman’s correlation coefficient | P | ||
| Age | 619 | 0.010 | 0.795 |
| Duration | 619 | 0.158 | 0.000 |
| BMI | 619 | 0.114 | 0.005 |
| C-peptide (fasting) | 619 | −0.302 | 0.000 |
| C-peptide 120 min | 619 | −0.302 | 0.000 |