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Table 3 Maternal characteristics of participants with non-missing values for the variable ‘ever drank alcohol during pregnancy’

From: A harmonized analysis of five Canadian pregnancy cohort studies: exploring the characteristics and pregnancy outcomes associated with prenatal alcohol exposure

 

AOF

APrON

FAMILY

OBS

3D

Total

(N = 2,918)a

(N = 2,109)

(N = 797)

(N = 2,073)

(N = 2,230)

(N = 10,127)

n

%

n

%

n

%

n

%

n

%

n

%

Ever drank alcohol during pregnancy

1429

49.0

157

7.6

29

3.6

518

25.0

1180

52.9

3313

32.7

Ever drank alcohol during year prior to pregnancy

2382

82.2

N/A

N/A

530

66.5

1948

95.3

1879

84.3

6739

84.6

Ever binge drank during pregnancyb

304

10.5

N/A

N/A

0

0.0

16

0.8

183

11.7

503

6.9

Race/ethnicity – White

2295

79.4

1672

80.3

673

88.3

1372

66.7

1667

74.9

7679

76.7

Married or living with partner

2745

94.9

2022

96.0

N/A

N/A

1857

97.7

2104

94.5

8728

95.6

Completed high school

2805

97.0

2007

97.3

N/A

N/A

2035

99.9

2133

97.7

8980

97.9

Completed post-secondary

2182

75.5

1810

87.7

N/A

N/A

1980

97.2

1945

89.1

7917

86.3

In paid employment

1705

58.7

N/A

N/A

628

78.8

1873

93.4

1813

81.3

6019

75.8

Income- Below Market Basket Measurec

237

8.5

185

9.0

84

10.8

183

9.0

225

10.5

914

9.3

Income- Below median household income

1356

48.4

923

44.7

500

64.1

450

22.1

1033

48.4

4262

43.4

Ever smoke cigarettes before pregnancy

N/A

N/A

923

27.3

311

39.0

488

30.3

787

35.4

2156

32.1

Ever smoke cigarettes during pregnancy

337

11.6

52

2.5

52

6.5

101

6.6

284

16.0

826

9.1

Pre-pregnancy BMI > 30

333

11.7

210

11.2

175

22.6

165

8.5

258

12.3

1141

11.9

First pregnancy

1016

35.3

990

47.5

245

30.7

799

39.2

822

36.9

3872

38.6

 

Median

Range

Median

Range

Median

Range

Median

Range

Median

Range

Median

Range

Maternal age (years)d

31

18–47

32

16–45

32

16–47

34

20–51

31

18–47

32

16–51

  1. aN = Number of participants from each cohort with non-missing values for the variable ‘ever drank alcohol during pregnancy’
  2. bBinge drinking was defined as consuming 5 or more drinks on one occasion in AOF, APrON, FAMILY, and 3D, and as consuming 4 or more drinks on one occasion in OBS
  3. cThe Market Basket Measure is a measure of low income based on the cost of a specific basket of goods and services representing a modest, basic standard of living developed by Employment and Social Development Canada (ESDC). Reference values for each cohort were taken from the most relevant MBM region available (metropolitan area or province + urbanicity) from the closest census (2015 or 2010) values published by Statistics Canada.* In all cases, percent is calculated out of the non-missing values for the given maternal characteristic, which may differ from the overall N for the cohort
  4. dMaternal age is summarized from age at first visit during pregnancy for AOF, FAMILY, OBS, and 3D, and from age at delivery for APrON, Range = Min–Max