Table 3. Use of antidepressant classes as a % of episode duration.

Antidepressant Classes	TRD episodes	Non-TRD episodes (with at leastone ADAP prescription)	P
			Ho: MT = MN; H1: MT<>MN
SSRI	62%	70%	a<0.001
ATYPICAL AD	24%	16%	<0.001
SNRI	25%	15%	<0.001
AD - OTHERS	24%	8%	<0.001
AP	7%	2%	<0.001
LITHIUM	0.4%	0.0%	<0.001
AD – MAOI	0%	0%	<0.001

Abbreviations: p = p-value, H₀ = Null Hypothesis, H₁ = Alternative Hypothesis; M_T: The proportion of usage of an antidepressant in TRD episodes; M_N: 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: M_T<> M_N.