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Table 3 Responders and non-respondersa to the question about binge drinking

From: Alcohol consumption and binge drinking in early pregnancy. A cross-sectional study with data from the Copenhagen Pregnancy Cohort

Characteristics

Responding, n (%)

Missing, n (%)

P-value

Maternal age (years)

<24

97 (3)

37 (5)

 

25-29

774 (24)

208 (26)

 

30-34

1363 (42)

311 (39)

 

35-39

789 (24)

187 (24)

 

≥40

215 (7)

50 (6)

0.081

Parity

Nulliparous

1960 (61)

499 (63)

 

Multiparous

1278 (39)

294 (37)

0.215

Danish language skills

Yes

3068 (96)

755 (96)

 

No

132 (4)

28 (4)

0.483

Cohabitation

Yes

2949 (93)

716 (92)

 

No

236 (7)

63 (8)

0.521

Education

   

Compulsory school

194 (7)

56 (8)

 

Skilled

106 (4)

23 (3)

 

Tertitary

210 (7)

48 (7)

 

Bachelor or equivalent

897 (31)

220 (34)

 

Master or equivalent

1451 (51)

308 (47)

0.321

Occupation

Working

2066 (71)

454 (68)

 

Unemployed

166 (6)

41 (6)

 

Student

464 (16)

129 (19)

 

Otherb

206 (7)

46 (7)

0.204

BMI (kg/m 2 )

Underweight (<18.5)

154 (5)

35 (5)

 

 Normal (18.5-24.9)

2291 (77)

518 (76)

 

 Overweight (25–29.9)

398 (14)

93 (14)

 

 Obese (>30)

126 (4)

36 (5)

0.689

 Mean (SD)

23 (4)

  

Chronic illness

 Yes

272 (9)

64 (9)

 

No

2399 (82)

594 (84)

 

Other illness c

255 (9)

51 (7)

0.399

Miscarriage

Yes

654 (20)

150 (19)

 

No

2584 (80)

643 (81)

0.418

Time to pregnancy, months

0-2

1708 (56)

434 (61)

 

3-11

935 (30)

195 (27)

 

≥12

428 (14)

83 (12)

0.031

Pregnancy planning

Very planned

1462 (47)

288 (40)

 

Fairly planned

885 (29)

202 (28)

 

Neither planned nor unplanned

486 (16)

160 (22)

 

Fairly unplanned

116 (4)

38 (5)

 

Very unplanned

134 (4)

34 (5)

0.000

Assisted reproductive technology (ART)

Yes

402 (13)

74 (10)

 

No

2672 (87)

648 (90)

0.039

Exercice

Yes

2019 (70)

475 (71)

 

No

859 (30)

189 (28)

0.514

Alcohol before pregnancy, no of units/week

0

960 (30)

17 (13)

 

1

580 (18)

23 (18)

 

2-7

1507 (47)

74 (58)

 

≥8

178 (5)

14 (11)

0.000

Smoking before pregnancy

Yes

309 (10)

87 (11)

 

No

2894 (90)

692 (89)

0.203

  1. aIncluding those who answered ‘don’t know’
  2. b Including stay at home, pensioners, maternity leave
  3. c E.g: asthma, polycystic ovary syndrome, migraine