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Table 1 Socio-demographic characteristics of mothers (N = 809)

From: Chromosomal abnormalities: subgroup analysis by maternal age and perinatal features in zhejiang province of China, 2011–2015

Characteristics

Number

Percentage

Minority

 

5

0.62

Age

<20

3

0.37

20–24

98

12.08

25–29

209

25.77

30–34

214

26.39

35–47

285

35.14

Living Area

Rural

323

39.83

Urban

486

59.93

Education

Some/completed primary school

89

10.97

Junior/senior high school

414

51.05

College

301

37.11

Unknown

5

0.62

Gravidity at time of participation in study

1

91

11.22

2

121

14.92

3 and more

597

73.61

Parity at time of participation n study

0

229

28.24

1

404

49.82

2 and more

176

21.70