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Table 1 General and obstetric characteristics of subjects before and during the COVID-19 pandemic

From: Psychological impacts of the COVID-19 pandemic on one-month postpartum mothers in a metropolitan area of Japan

 

Before COVID-19 group

During COVID-19 group

P a value

2017

2018

2019

2020

n = 706

n = 1142

n = 996

n = 1095

n

%

n

%

n

%

n

%

Age

 Mean (SD)

33.7

5.2

33.4

5.0

33.2

5.1

33.2

5.2

0.178b

  < 34

395

55.9%

663

58.1%

578

58.0%

645

58.9%

0.665

 ≧35

311

44.1%

479

41.9%

418

42.0%

450

41.1%

Parity

 Primipara

331

46.9%

565

49.5%

494

49.6%

520

47.5%

0.552

 Multipara

375

53.1%

577

50.5%

502

50.4%

575

52.5%

Birth weeks

 Premature delivery (< 37 weeks)

34

4.8%

43

3.8%

42

4.2%

44

4.0%

0.736

 Full term birth (> 38 weeks)

672

95.2%

1099

96.2%

954

95.8%

1051

96.0%

Delivery style

 Vaginal delivery

501

71.0%

810

70.9%

723

72.6%

793

72.4%

0.756

 Caesarean Section

205

29.0%

332

29.1%

273

27.4%

302

27.6%

Birth

 Single birth

690

97.7%

1117

97.8%

948

95.2%

1073

98.0%

0.719

 Multiple birth

16

2.3%

25

2.2%

18

1.8%

22

2.0%

Birth weight of infant

 Normal or high birth weight infant (> 2500 g)

643

89.1%

1015

87.0%

902

89.0%

989

88.5%

0.413

 Low birth weight infant (< 2500 g)

79

10.9%

152

13.0%

112

11.0%

128

11.5%

  1. aAnalysed by the chi-square test; b one-way Analysis of variance