Categories used to determine diabetes status in the ccCHiP cohort
| Level | Diagnostic category | N | Per cent |
| 1 | HbA1c ≥6.5% | 175 | 54.3 |
| 2 | FPG ≥7 mmol/L and a previous diagnosis of diabetes or FPG ≥7 mmol/L and receiving antihyperglycemic medication | 27 | 8.4 |
| 3 | FPG ≥7 mmol/L and no previous diagnosis of diabetes | 36 | 11.2 |
| 4 | Receiving treatment with insulin therapy | 2 | 0.6 |
| 5 | Receiving metformin and a previous diagnosis of diabetes | 66 | 20.5 |
| 6 | Receiving antihyperglycemic medication other than metformin | 16 | 5.0 |
| Total | 322 | 100 |
ccCHiP, Collaborative Centre for Cardiometabolic Health in Psychosis; FPG, fasting plasma glucose; HbA1c, hemoglobin A1c.