Independent baseline associates of diabetic ketoacidosis frequency during follow-up
| Incident rate ratio (95% CI) | P value | |
| ln(serum C-peptide (pmol/L))* | 0.57 (0.42 to 0.77) | <0.001 |
| Secondary diabetes | 57.0 (6.06 to 536) | <0.001 |
| HbA1c (increase of 1% or 7 mmol/mol) | 1.76 (1.37 to 2.25) | <0.001 |
| Insulin use at study entry | 19.4 (4.22 to 89.4) | <0.001 |
*A 2.72-fold increase in serum C-peptide corresponds to an increase of 1 in ln(serum C-peptide).
HbA1c, glycated hemoglobin.