Table 5. Zinc levels and prevalence of zinc deficiency in the three diagnostic groups.
| Depression as the main diagnosis | Depression as co-morbid diagnosis | Other psychiatric diagnoses | |
| Zinc deficiency (%)* | 36.6 | 25.0 | 53.8 |
| Zinc levels µmol/L(SD)** | 11.4 (1.7) | 11.7 (1.4) | 10.7 (2.1) |
χ2 df = 1 = 4.36, p = 0.037). Significant difference in zinc deficiency between patient groups with depression/comorbid depression and other psychiatric diagnoses (
= 2.63, df = 2, p = 0.078). Distribution between fasting/non-fasting conditions was equal in the three patient groups. No significant differences between the three patient groups, using one-way analysis of variance (F