The comorbid network characteristics of anxiety and depressive symptoms among Chinese college freshmen

BMC Psychiatry

Table 2 Mean scores, standard deviations, normality, item abbreviation, and predictability of each symptom noted in the GAD-7 and PHQ-9

	Item abbreviation	M	SD	S-W	Predictability
Anxiety (GAD-7)
GAD1: Feeling nervous, anxious, or on edge	Nervous	0.87	0.68	0.77^***	0.51
GAD2: Not being able to stop…	Control worry	0.68	0.74	0.77^***	0.61
GAD3: Worrying too much about…	Worry too much	0.82	0.77	0.80^***	0.58
GAD4: Trouble relaxing	Relax	0.60	0.75	0.74^***	0.60
GAD5: Being so restless that it’s hard to sit still	Restless	0.46	0.67	0.68^***	0.58
GAD6: Becoming easily annoyed or irritable	Irritable	0.62	0.73	0.75^***	0.55
GAD7: Feeling afraid as if something awful…	Afraid	0.46	0.70	0.67^***	0.49
Depression (PHQ-9)
PHQ1: Little interest or pleasure…	Anhedonia	0.78	0.78	0.80^***	0.43
PHQ2: Feeling down, depressed, or hopeless	Sad mood	0.56	0.68	0.73^***	0.49
PHQ3: Trouble falling or staying asleep…	Sleep	0.63	0.81	0.74^***	0.32
PHQ4: Feeling tired or having little energy	Energy	0.84	0.82	0.81^***	0.50
PHQ5: Poor appetite or overeating	Appetite	0.69	0.80	0.77^***	0.36
PHQ6: Feeling bad about yourself…	Guilt	0.54	0.75	0.71^***	0.45
PHQ7: Trouble concentrating on things…	Concentration	0.70	0.82	0.77^***	0.37
PHQ8: Moving or speaking so slowly…	Motor	0.37	0.66	0.60^***	0.45
PHQ9: Thoughts that you would be…	Suicide	0.15	0.48	0.36^***	0.32

Notes: SD = standard deviation, S-W = Shapiro-Wilk test, GAD-7 = Seven-Item Generalized Anxiety Disorder scale, PHQ-9 = Nine-Item Patient Health Questionnaire, ***p < 0.001

ISSN: 1471-244X