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Table 1 Demographic characteristics of the cases and controls (n (%))

From: Maternal deaths among rural–urban migrants in China: a case–control study

Items

Cases (N = 124)

Controls (N = 496)

Chi-square test

Pvalue

Age group

    

  ≤19 years old

6 (5.5)

7 (1.6)

18.6

<0.001

  20-34 years old

62 (56.9)

333 (76.4)

  

  ≥ 35 years old

41 (37.6)

96 (22.0)

  

Education level

    

  Primary school

54 (50.0)

75 (17.2)

57.9

<0.001

  Junior high school

44 (40.7)

218 (50.0)

  

  Senior high school or above

10 (9.3)

143 (32.8)

  

Marital status

    

  Unmarried or divorced

23 (21.1)

35 (8.0)

15.7

0.001

  Married

86 (78.9)

401 (92.0)

  

Gravidity

    

  0

218 (16.7)

109 (25.0)

8.6

0.013

  1-2

68 (63.0)

206 (47.2)

  

  ≥3

22 (20.4)

121 (27.8)

  

Parity

    

  0

35 (32.4)

198 (45.4)

18.3

<0.001

  1

63 (58.3)

230 (52.8)

  

  ≥2

10 (9.3)

8 (1.8)

  
  1. †: Data missing for 1 case.