Table 8: Comparison of stimulated whole salivary potassium between three types of antidepressant drugs.
| Parameter | Group | Mean | SD | t value | D/F | P value | Results |
| Potassium(mg/dl) | TCA versus SSRI | 12.02 | 1.02 | 9.95 | 31 | P<0.0001 | S |
| 15.46 | 0.94 | ||||||
| SSRI versus TeCA | 15.46 | 0.94 | 8.24 | 35 | P<0.0001 | S | |
| 28.77 | 7.17 | ||||||
| TCA versus TeCA | 12.02 | 1.02 | 8.32 | 28 | P<0.0001 | S | |
| 28.77 | 7.17 |
SD: Standard deviation, S: Significant, TCA: Tricyclic antidepressant, SSRI: Selective serotonin reuptake inhibitor, TeCA: Tetracyclic antidepressants, D/F: Degrees of freedom