Table 1 Sample characteristics of pregnant women and male partners

Age

228 (0)

100

31.38 (22–47)

3.98

195 (2)

99.0

33.08 (22–50)

4.83

 < 0.001

-2.55 to -0.84

  < 28

46

20.2

30

15.2

 29–35

149

65.4

119

60.4

 36 < 

33

14.5

46

23.4

Pregnancy week

222 (6)

97.4

31.73 (26–40)

3.60

193 (4)

98.0

31.79 (26–41)

3.54

0.869

-0.75 to 0.63

 Week 26–30

104

45.6

86

43.7

 Week 31–35

74

32.5

73

37.1

 Week 36–41

44

19.3

34

17.3

Marital status

217 (11)

95.2

196 (1)

99.5

NA^a

 Single

7

3.1

1

0.5

 Partnered

130

57.0

122

61.9

 Married

80

35.1

73

37.1

Educational level

227 (1)

99.6

196 (1)

99.5

0.025

 Primary/secondary school

22

9.6

34

17.3

 College/university (< 4 years)

65

28.5

63

32.0

 College/university (≥ 4 years)

140

61.4

99

50.3

Family income, before tax (NOK)

222 (6)

97.4

192 (5)

97.5

NA^a

  < 750.000

36

15.8

30

15.2

 750.000–1.000.000

67

29.4

53

26.9

  > 1.000.000

119

52.2

109

52.2

Nationality

228

100

196 (1)

99.5

0.034

 Norwegian

196

86.0

152

77.2

 Other

32

14.0

44

22.3

Complications during pregnancy

226 (2)

99.1

NA^a

NA^a

 Yes

53

23.2

Depressive symptoms^b

224 (4)

98.2

193 (4)

98.0

 < 0.001

 Yes

40

17.9

6

3.1

Mental illness

227 (1)

99.6

196 (1)

99.5

 Present

9

3.9

6

3.0

0.812

 Previous

30

13.2

10

5.1

0.007

Sleep, hours

216 (12)

94.7

7.36 (3–12)

1.32

180 (17)

91.4

6.95 (4–9)

0.85

 < 0.001

0.19 to 0.62

Sleep

224 (4)

98.2

193

98.0

0.002

 Enough

138

60.5

147

74.6

 Not enough

86

37.7

46

23.4