Table 3.

Correlations between GAD2, PHQ2, and PHQ-4 (n = 1251).

	Mean	SD	Cronbach's alpha
Anxiety items (GAD2)
Feeling nervous, anxious or on edge	0.84	0.85
Not being able to stop or control worrying	0.77	0.87
GAD2 sum score	1.61	1.59	0.82
Depression items (PHQ2)
Little interest or pleasure in doing things	0.88	0.86
Feeling down, depressed, or hopeless	0.71	0.88
PHQ2 sum score	1.60	1.64	0.88
Total scale score (PHQ4)	3.21	3.10	0.92