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Table 2 Frequencies and percentages of alcohol use variable values across cohorts

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

(N = 3,341)a

(N = 2,187)

(N = 806)

(N = 2,700)

(N = 2,365)

n

% totalb

% observedc

n

% total

% observed

n

% total

% observed

n

% total

% observed

n

% total

% observed

Prior to Pregnancy

 Ever drank alcohol

  No

   

261

11.9%

12.4%

   

203

7.5%

7.9%

   

  Yes

   

1836

84.0%

87.6%

   

2382

88.2%

92.1%

   

  Missing

   

90

4.1%

-

   

115

4.3%

-

   

 Ever drank (year prior)

  No

590

17.7%

17.8%

   

267

33.1%

33.5%

122e

4.5%

5.1%

461

19.5%

19.5%

  Yes

2728

81.7%

82.2%

   

530

65.8%

66.5%

2247

83.2%

94.9%

1898

80.3%

80.5%

  Missing

23

0.7%

-

   

9

1.1%

-

331

12.3%

-

6

0.3%

-

 Binge drank (year prior)d

  No

1300

38.9%

49.1%

      

941

34.9%

40.4%

927

39.2%

48.9%

  Yes

1349

40.4%

50.9%

      

1390

51.5%

59.6%

967

40.9%

51.1%

  Missing

692

20.7%

-

      

369

13.7%

-

471

19.9%

-

During Pregnancy

 Ever drank alcohol

  No

1489

44.6%

51.0%

1952

89.3%

92.5%

768

95.3%

96.4%

1555

57.6%

75.0%

1050

44.4%

47.1%

  Yes

1429

42.8%

49.0%

157

7.2%

7.4%

29

3.6%

3.6%

518

19.2%

25.0%

1180

49.9%

52.9%

  Missing

423

12.7%

-

78

3.7%

-

9

1.1%

-

627

23.2%

-

135

5.7%

-

 Ever binge drank

  No

2593

77.6%

89.5%

   

797

98.9%

100.0%

2303

85.3%

99.2%

1385

58.6%

88.3%

  Yes

304

9.1%

10.5%

   

0

0.0%

0.0%

18

0.7%

0.8%

183

7.7%

11.7%

  Missing

444

13.3%

-

   

9

1.1%

-

379

14.0%

-

797

33.7%

-

  1. aN = Number of participants from each cohort included in the harmonized dataset
  2. b% total: percent of all participants
  3. c% observed: percent of participants with non-missing values
  4. dBinge 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
  5. eFrequencies for Ever drank in the year prior to pregnancy in OBS were taken from the variable as collected by the study (rather than creating a derived variable incorporating information from the separate variable about Ever drank alcohol prior to pregnancy) to be as compatible as possible with other studies. Hence the number of No responses appears lower than for Ever drank alcohol in this cohort
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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