Table 2. Characteristics of schizophrenia with and without diabetes.
| Schizophrenia without diabetes | Schizophrenia with diabetes | t or x2 | p-value | |
| Duration of illness (years) | 13.4±7.5 | 11.6±9.3 | −0.32 | 0.750 |
| Antipsychotic types (typicals/atypicals) | 21/106 | 16/39 | 0.13 | 0.910 |
| Antipsychotic dose (CPZ equivalents) | 440.9±304.1 | 385.7±257.1 | −1.18 | 0.238 |
| Duration of current antipsychotic treatment (months) | 64.2±56.3 | 60.4±49.3 | −0.68 | 0.499 |
| Anti-Parkinsonian drug (yes/no) | 38/89 | 16/39 | 3.74 | 0.053 |
| Score on positive symptom scale | 13.1±5.8 | 12.3±6.0 | −0.79 | 0.428 |
| Score on negative symptom scale | 19.9±6.6 | 20.8±7.6 | 0.83 | 0.408 |
| Score general psychopathology scale | 25.9±6.3 | 26.1±6.2 | 0.23 | 0.820 |
| Total PANSS score | 58.8±15.2 | 59.2±15.0 | 0.18 | 0.854 |
Note: Mean±SD. CPZ = chlorpromazine; PANSS = Positive and negative syndrome scale.