Table 1 Characteristics of mothers and infants

Maternal age during delivery (years)

33 (29–36)

32 (29–36)

33 (29–36)

0.59

Duration of observation mother (days)

4 (3–5)

4 (3–6)

4 (3–5)

0.28

Duration of observation infant (days)

4 (3–5)

4 (3–5)

4 (3–5)

0.14

Marital status

0.80

 Married/living together

275 (85.9)

121 (85.2)

154 (86.5)

 Living Apart Together

17 (5.3)

7 (4.9)

10 (5.6)

 Single

28 (8.8)

14 (9.9)

14 (7.9)

 Unknown

4

1

3

Smoking

31 (9.8)

16 (11.6)

15 (8.5)

0.36

 Unknown

9

5

4

Type of psychotropic medication

0.37

 Solely antidepressant

291 (89.8)

126 (88.1)

165 (91.2)

 Antidepressant and other type of psychotropic drug

33 (10.2)

17 (11.9)

16 (8.8)

Dosage of antidepressant

0.003

 Below minimal effective daily dosage

20 (6.2)

8 (5.6)

12 (6.6)

 Minimal effective daily dosage

146 (45.2)

50 (35.2)

96 (53.0)

 Above minimal effective daily dosage

157 (48.6)

84 (59.2)

73 (40.3)

 Unknown

1

Primiparous

144 (44.4)

65 (45.5)

79 (43.6)

0.75

HADS^a

 Anxiety scale elevated

131 (42.5)

75 (55.1)

67 (39.0)

0.02

 Depression scale elevated

93 (30.2)

68 (50.0)

63 (36.6)

0.01

 One or both scales elevated

142 (46.1)

75 (55.1)

67 (39.0)

0.01

 Unknown

16

7

9

Gender infant male

163 (50.3)

78 (54.5)

85 (47.0)

0.18

Type of birth

0.07

 Vaginal, non-instrumental

236 (72.8)

97 (67.8)

139 (76.8)

 Vaginal, instrumental

37 (11.4)

16 (11.2)

21 (11.6)

 Caesarean Section

51 (15.7)

30 (21.0)

21 (11.6)

Type of feeding

0.02

 Breastfeeding or mixed feeding

250 (77.4)

101 (71.1)

149 (82.3)

 Exclusively formula

73 (22.6)

41 (28.9)

32 (17.7)

 Unknown

1

Prematurity

30 (9.3)

13 (7.0)

17 (9.4)

0.93

Finnegan score, highest during observation

<0.001

  < 4

130 (40.1)

30 (21.0)

100 (55.2)

 4–8

156 (48.1)

80 (55.9)

76 (42.0)

  ≥ 8

38 (11.7)

33 (23.1)

5 (2.8)