Table 2.

Comparison of symptom scores between MDD and non-MDD patients

Item	non MDD cases (n=147)	MDD cases (n=37)	t-test (2-tail) p value
Sadness	0.44±0.89	2.16±1.12	<0.001
Insomnia	0.80±1.17	2.49±0.96	<0.001
Loss of interest	0.56±0.98	2.49±0.80	<0.001
Guilt	0.21±0.63	1.69±1.33	<0.001
Low energy	0.77±1.13	2.40±1.14	<0.001
Difficulty concentration	0.43±0.93	2.62±0.83	<0.001
Appetite change	0.46±0.96	1.71±1.36	<0.001
Psychomotor retardation/agitation	0.44±0.88	2.08±1.18	<0.001
Suicidality	0.01±0.12	0.86±1.01	<0.001
Total PHQ-9 scores	4.11±5.69	18.38±3.68	<0.001