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Table 2 Item responses to the GAD-7

From: The GAD-7 and the PHQ-8 exhibit the same mathematical pattern of item responses in the general population: analysis of data from the National Health Interview Survey

Item

Item responses (%)

Rate of more than half the days to several days

Rate of nearly every day to more than half the days

Not at all (%)

Several days (%)

More than half the days (%)

Nearly every day (%)

1. Feeling nervous, anxious, or on edge

76.5

16.8

2.9

3.8

0.17

1.30

2. Not being able to stop or control worrying

83.3

10.5

2.3

3.9

0.21

1.74

3. Worrying too much about different things

76.3

16.3

2.8

4.6

0.17

1.64

4. Trouble relaxing

80.7

12.6

2.5

4.2

0.20

1.64

5. Being so restless that it is hard to sit still

88.6

7.2

1.5

2.7

0.20

1.87

6. Becoming easily annoyed or irritable

74.9

18.1

3.3

3.8

0.18

1.15

7. Feeling afraid as if something awful might happen

87.8

8.2

1.6

2.4

0.20

1.49

Average

81.1

12.8

2.4

3.6

0.19 ± 0.02

1.55 ± 0.25