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Table 1 Demographic and reproductive characteristics by miscarriage rates

From: Does a short luteal phase correlate with an increased risk of miscarriage? A cohort study

 

Miscarriage

N = 48 (19%)

No Miscarriage

N = 204 (81%)

Total

N = 252

P-value

(chi-square)

Study Source—Data Set

   

0.008

 CEIBA

13 (16.5%)

66 (83.5%)

79

 

 TTP

6 (14.3%)

36 (85.7%)

42

 

 CMFS

12 (14.1%)

73 (85.9%)

85

 

 iNEST

17 (37%)

29 (63%)

46

 

Maternal age (y)

   

0.003

 < 30

23 (13.8%)

144 (86.2%)

167

 

 ≥ 30

25 (29.4%)

60 (70.6%)

85

 

 Missing

  

0

 

Paternal age (y)

   

0.006

 < 30

17 (12.7%)

117 (87.3%)

134

 

 ≥ 30

30 (26.3%)

84 (73.7%)

114

 

 Missing

1

3

4

 

Race & ethnicity

   

0.819

 White (non-Hispanic)

42 (18.6%)

184 (81.4%)

226

 

 Hispanic

1 (14.3%)

6 (85.7%)

7

 

 Other

1 (11.1%)

8 (88.9%)

9

 

 Missing

4

6

10

 

Federal poverty level, adjusted by year

  

0.587

 < 150%

3 (23.1%)

10 (76.9%)

13

 

 150%-200%

2 (11.1%)

16 (88.9%)

18

 

 ≥ 200%

22 (13.4%)

142 (86.6%)

164

 

 Missing

21

36

57

 

Completed education

   

0.534

 High / Vocational / Technical school graduate or less

4 (25%)

12 (75%)

16

 

 Some college

6 (13.3%)

39 (86.7%)

45

 

 College graduate

34 (18.8%)

147 (81.2%)

181

 

 Missing

4

6

10

 

Occupational status

   

0.692

 Professional

18 (17.6%)

84 (82.4%)

102

 

 Technical / Skilled or unskilled laborer

2 (11.1%)

16 (88.9%)

18

 

 Clerical / Sales

6 (23.1%)

20 (76.9%)

26

 

 Homemaker

4 (10%)

36 (92.3%)

40

 

 Student

4 (22.2%)

14 (73.7%)

18

 

 Other

3 (16.7%)

15 (83.3%)

18

 

 Missing

11

19

30

 

Employed

   

0.336

 Yes

26 (16.4%)

133 (83.7%)

159

 

 No

5 (10.6%)

42 (89.4%)

47

 

 Missing

17

29

46

 

Smoking

   

0.537

 Yes

2 (22.2%)

7 (77.8%)

9

 

 No

16 (14.5%)

94 (85.5%)

110

 

 Missing

30

103

133

 

Drinking

   

0.511

 Yes

12 (16.9%)

59 (83.1%)

71

 

 No

6 (12.5%)

42 (87.5%)

48

 

 Missing

30

103

133

 

Age at first pregnancy (y)

   

0.740

 Never pregnant

19 (16.7%)

95 (83.3%)

114

 

 ≤ 19

1 (5%)

19 (95%)

20

 

 20–24

3 (18.8%)

13 (81.3%)

16

 

 25–29

2 (15.4%)

11 (84.6%)

13

 

 ≥ 30

6 (14.3%)

36 (85.7%)

42

 

Missing data:

17

30

47

 

Parity

   

0.470

 No previous pregnancy

19 (16.7%)

95 (83.3%)

114

 

 Previous pregnancy

12 (13.0%)

80 (87%)

92

 

 Missing data

17

29

46

 

Previous live birth

   

0.489

 None

20 (16%)

105 (84%)

125

 

 At least one

10 (12.5%)

70 (87.5%)

80

 

 Missing data:

18

29

47

 

Previous spontaneous abortion

   

0.515

 None

23 (13.9%)

143 (86.1%)

166

 

 At least one

7 (18%)

32 (82%)

39

 

 Missing data

18

29

47

 

Medication in luteal phase (progesterone/HCG)

    

 No Medication

44 (19.3%)

184 (80.7%)

228

 

 Medication

4 (16.7%)

20 (83.3%)

24