The Validity and Reliability of the Sinhala Translation of the Patient Health Questionnaire (PHQ-9) and PHQ-2 Screener

Table 4

PHQ-9 item mean and item-rest correlation.

	Mean	Standard deviation	Corrected item-total correlation	Cronbach’s alpha if item is removed
Item 1; Little interest or pleasure in doing things	0.92	1.28	0.73	0.88
Item 2; Feeling down, depressed, or hopeless	1.36	1.30	0.74	0.88
Item 3; Trouble falling or staying asleep or sleeping too much	1.25	1.32	0.71	0.88
Item 4; Feeling tired or having little energy	1.30	1.32	0.76	0.88
Item 5; Poor appetite or overeating	0.97	1.25	0.60	0.89
Item 6; Feeling bad about yourself or that you are a failure	0.57	1.01	0.44	0.90
Item 7; Trouble concentrating on things	0.82	1.26	0.62	0.89
Item 8; Moving or speaking so slowly that other people could have noticed	0.83	1.27	0.70	0.88
Item 9; Thoughts that you would be better off dead or of hurting yourself	0.64	1.05	0.64	0.89