Table 9.

DASS depression items are rescaled to the QIDS scale using 3 calibration items and SL rescaling and QIDS items recoded according to the original coding scheme (merge sleep, appetite/weight change and psychomotor items)

item	label	Thr 1	Thr2	Thr3	meanThr	Discr
QIDS1_4a	Sleep problems	−3.97	−1.82	2.79	−1.00	0.50
DASS13	I felt sad and depressed	−2.12	0.71	2.55	0.38	1.59
DASS26	I felt down-hearted and blue	−1.85	0.83	2.71	0.56	1.87
DASS5	I just couldn’t seem to get going	−3.17	1.32	4.60	0.92	0.71
DASS42	I found it difficult to work up the initiative to do things	−2.12	1.14	3.74	0.92	0.95
DASS10	I felt that I had nothing to look forward to	−1.00	1.13	2.82	0.99	1.54
DASS17	I felt I wasn’t worth much as a person	−1.13	1.29	3.10	1.09	1.35
DASS37	I could see nothing in the future to be hopeful about	−0.64	1.25	2.79	1.13	1.93
QIDS11	View of myself	0.70	1.34	1.42	1.15	1.99
QIDS5	Feeling sad	−0.02	1.34	2.16	1.16	2.80
DASS34	I felt I was pretty worthless	−0.74	1.43	3.01	1.23	1.62
DASS21	I felt that life wasn’t worthwhile	−0.65	1.40	2.99	1.25	1.90
DASS38	I felt that life was meaningless	−0.40	1.48	2.98	1.35	1.80
QIDS10	Concentration/decision making	0.31	1.44	2.53	1.43	2.29
DASS24	I couldn’t seem to get any enjoyment out of the things I did	−1.15	1.76	3.75	1.45	1.62
QIDS14	Energy loss	0.14	1.38	2.84	1.46	2.13
DASS31	I was unable to become enthusiastic about anything	−0.82	1.81	3.76	1.58	1.42
DASS3	I couldn’t seem to experience any positive feeling at all	−0.97	1.94	4.13	1.70	1.50
QIDS15_16b	Psychomotor problems	0.57	1.58	3.03	1.72	1.61
QIDS13	General Interest	0.80	2.04	2.65	1.83	2.22
DASS16	I felt that I had lost interest in just about everything	−0.35	2.12	3.99	1.92	1.56
QIDS6_9c	Appetite/Weight change	1.29	2.12	3.27	2.23	0.96
QIDS12	Thoughts of death/suicide	1.12	1.89	4.02	2.34	1.42

^aHighest of four sleep items

^bHighest of Psychomotor problems

^cHighest of appetite/weight change items