Table 4 Screening accuracy of the PHQ-2* during pregnancy and postpartum using the EPDS as reference standard for probable major depression

Positive

≥ 2

≥ 3

Positive

≥ 2

≥ 3

7

7

4

5

5

3

0

0

3

0

0

2

200

254

286

157

217

253

96

42

10

113

53

17

1.0

(0.65–1.0)

1.0

(0.65–1.0)

0.57

(0.25–0.84)

1.0

(0.57–1.0)

1.0

(0.57–1.0)

0.60

(0.23–0.88)

0.68

(0.62–0.73)

0.86

(0.81–0.89)

0.97

(0.94–0.98)

0.58

(0.52–0.64)

0.80

(0.75–0.85)

0.94

(0.90–0.96)

0.07

(0.03–0.13)

0.14

(0.07–0.27)

0.29

(0.12–0.55)

0.04

(0.02–0.10)

0.09

(0.04–0.19)

0.15

(0.05–0.36)

1.0

(0.98–1.0)

1.0

(0.99–1.0)

0.99

(0.97–1.0)

1.0

(0.98–1.0)

1.0

(0.98–1.0)

0.99

(0.97–1.00)

3.09

(2.62–3.63)

7.04

(5.33–9.33)

16.79

(6.98–40.97)

2.39

(2.08–2.75)

5.10

(4.00–6.49)

9.52

(4.07–22.31)

0

-

0

-

0.44

(0.19–1.04)

0

-

0

-

0.43

(0.15–1.25)

Positive

≥ 2

≥ 3

Positive

≥ 2

≥ 3

14

14

11

13

12

5

0

0

3

1

2

9

169

202

230

149

190

208

69

36

8

64

23

5

1.00

(0.79–1.00)

1.00

(0.79–1.00)

0.79

(0.52–0.92)

0.93

(0.69–0.99)

0.86

(0.60–0.96)

0.36

(0.16–0.61)

0.71

(0.65–0.76)

0.85

(0.80–0.89)

0.97

(0.94–0.98)

0.70

(0.64–0.76)

0.89

(0.84–0.93)

0.98

(0.95–0.99)

0.17

(0.10–0.26)

0.28

(0.18–0.42)

0.58

(0.36–0.77)

0.17

(0.10–0.27)

0.34

(0.21–0.51)

0.50

(0.24–0.76)

1.00

(0.98–1.00)

1.00

(0.98–1.0)

0.99

(0.96–1.0)

0.99

(0.96–1.00)

0.99

(0.96–1.00)

0.96

(0.92–0.98)

3.45

(2.83–4.21)

6.62

(4.89–8.93)

23.12

(11.22–48.70)

3.10

(2.40–3.97)

7.94

(5.11–12.34)

15.52

(4.99–46.42)

0

-

0

-

0.22

(0.08–0.61)

0.10

(0.02–0.68)

0.16

(0.04–0.58)

0.66

(0.45–0.97)