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医学生PHQ-9的应答情况

Profile of responses on PHQ-9 among the medical students (n=1183)

Item (Over the last 2 weeks, how often have you been bothered by any of the following problems?)	Not at all (%)	Several days (%)	More than half the days (%)	Nearly every day (%)	Mean±SD
1. Little interest or pleasure in doing things.	12.6	71.6	12.2	3.6	1.07±0.62
2. Feeling down, depressed, or hopeless.	16.1	73.9	8.5	1.5	0.96±0.55
3. Trouble falling or staying asleep, or sleeping too much.	33.9	52.8	10.4	2.9	0.82±0.72
4. Feeling tired or having little energy.	14.3	68.9	13.9	3.0	1.05±0.63
5. Poor appetite or overeating.	30.6	56.6	10.5	2.4	0.85±0.69
6. Feeling bad about yourself or that. you are a failure or have let yourself or your family down.	43.0	47.8	7.2	1.9	0.68±0.69
7. Trouble concentrating on things, such as studying or reading.	18.9	58.9	17.8	4.4	1.08±0.73
8. Moving or speaking so slowly that other people could have noticed. Or the opposite being so fidgety or restless that you have been moving around a lot more than usual.	63.0	33.2	2.8	1.0	0.42±0.60
9. Thoughts that you would be better off dead, or of hurting yourself.	87.7	10.7	1.4	0.3	0.14±0.40