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Table 4 Characteristics of the women with mental disorders

From: Examination of risk factors for high Edinburgh postnatal depression scale scores: a retrospective study at a single university hospital in Japan

  

With mental disorder

(N = 85)

Without mental disorder

(N = 1540)

  
  

Average

Average

P-value*

T-value

 

EPDS score

10

5

0.000

10.5

Maternal

Age at birth (years)

32.2

33.1

0.103

-1.63

Birth

Gestational age of birth (weeks)

38.7

38.0

0.332

3.71

Neonate

Birth weight (g)

2,887

2,822

0.256

1.14

 

Z-score of the birth weight

0.24

0.42

0.161

-1.40

  

N

%

N

%

P-value*

Chi-square statistic

Maternal

Young pregnant women (≤ 19)

2

2.4

21

1.4

0.452

0.57

 

Advanced maternal age (≥ 40)

7

8.2

142

9.2

0.759

0.09

 

Primipara

59

69.4

790

51.3

0.001

10.6

 

Multiple pregnancy

3

3.5

22

1.4

0.126

2.35

 

Pregnancy complication

32

37.6

882

57.3

0.000

12.61

 

Maternal transport

5

5.9

291

18.9

0.002

9.16

Birth

Preterm birth

8

9.4

310

20.1

0.015

5.88

 

Urgent cesarean section

11

12.9

384

24.9

0.012

6.23

Neonate

Low birth weight (< 2500 g)

22

25.9

369

24.0

0.687

0.16

 

Light for date

8

9.4

109

7.1

0.418

0.66

 

Hospitalization to NICU

50

58.8

851

55.3

0.520

0.41

 

Neonatal transport

0

0.0

12

0.8

0.414

0.67

Lactation

Exclusive breastfeeding

16

18.8

644

41.8

0.000

18.12

 

Bottle-feeding

37

43.5

112

7.3

0.000

125.9

Social

No partner

5

5.9

26

1.7

0.006

7.57

 

Welfare

0

0

4

0.3

0.638

0.22

 

Late visit

1

1.2

16

1.0

0.903

0.02

  1. T-test was used to compare mean values (EPDS score, age at birth, gestational age of birth, birth weight, Z-score of birth weight), and chi-square test was used for other items
  2. EPDS: Edinburgh Postnatal Depression Scale; SD: standard deviation; Maternal transport: patient was transferred to our hospital from another hospital due to complications; Light for date: birth weight was below the 10th percentile; NICU: neonatal intensive care unit; Neonatal transport: newborn was transported from our hospital to another hospital due to complications; Late visit: first visit was after 22 weeks
  3. * statistically significant (P < 0.05); Bold: statistically significant