Table 2.

Mean scores on individual items of the QIDS-SR ₁₆ (N = 621)

QIDS-SR 16 items		Mean	SD
1	Sleep onset insomnia	0.93	1.09
2	Mid-nocturnal insomnia	0.76	0.99
3	Early morning insomnia	0.41	0.86
4	Hypersomnia (excessive sleep)	1.03	0.92
5	Feeling depressed	0.65	0.76
6	Decreased appetite	0.20	0.50
7	Increased appetite	0.35	0.69
8	Weight reduction	0.39	0.79
9	Weight gain	0.36	0.77
10	Concentration/decision making	0.64	0.81
11	Self-view	0.69	1.09
12	Suicide ideation	0.32	0.68
13	General interest	0.40	0.75
14	Energy level	0.55	0.77
15	Feeling slowed down	0.35	0.72
16	Feeling restless	0.49	0.82

Abbreviations: SD Standard Deviation.