Use of antidepressant classes as a % of episode duration.

Abbreviations: p = p-value, H0 = Null Hypothesis, H1 = Alternative Hypothesis; MT: The proportion of usage of an antidepressant in TRD episodes; MN: The proportion of usage of an antidepressant in non-TRD episodes; ADAP: Antidepressant and antipsychotic/antimanic drugs; SSRI: Selective serotonin reuptake inhibitor; SNRI: Serotonin Norepinephrine reuptake inhibitors; AD: Antidepressant; AP: Antipsychotics; MAOI: Monoamine oxidase inhibitors; aH1: MT<> MN.