Table 2 Preconceptional (lifestyle) behaviours before and after exposure to the PCC-intervention

Retrieved PCC-Information

 Yes

496 (60.6)

132 (63.5)

1.05 (0.93–1.18)

68 (46.6)

14 (37.8)

0.81 (0.52–1.27)

 No

323 (39.4)

76 (36.5)

78 (53.4)

23 (62.2)

 Missing data

31

5

8

2

Visited PCC-Consultation

 Yes

204 (24.5)

60 (28.3)

1.15 (0.90–1.48)

36 (23.4)

7 (17.9)

0.77 (0.37–1.59)

 No

628 (75.5)

152 (71.7)

118 (76.6)

32 (82.1)

 Missing data

18

1

0

0

Fruit intake

 Adequate (≥ 2 pieces)

203 (25.0)

54 (25.7)

1.03 (0.79–1.33)

 Inadequate (< 2 pieces)

610 (75.0)

156 (74.3)

 Missing data

37

3

Vegetable intake

 Adequate (≥ 250 grams)

49 (6.0)

23 (11.0)

1.82 (1.14–2.91)

 Inadequate (< 250 grams)

764 (94.0)

187 (89.0)

 Missing data

37

3

Caffeine intake

 Adequate (≤ 2 beverages)

403 (49.6)

98 (46.7)

0.94 (0.80–1.11)

 Inadequate (> 2 beverages)

410 (50.4)

112 (53.3)

 Missing data

37

3

Preconceptional nutrition^a

  ≥ 2 adequate nutrition intakes

119 (14.6)

38 (18.1)

1.24 (0.89–1.72)

  < 2 adequate nutrition intakes

694 (85.4)

172 (81.9)

 Missing data

37

3

Folic acid supplements

 Started in time (≥ 4 weeks before conception)

482 (59.5)

121 (57.6)

0.97 (0.85–1.10)

 Started too late or never

328 (40.5)

89 (42.4)

 Missing data

40

3

Alcohol use

 Adequate (no preconceptional alcohol use)

415 (51.3)

108 (52.7)

1.03 (0.89–1.19)

52 (33.8)

14 (35.9)

1.06 (0.66–1.71)

 Inadequate (used alcohol after conception)

394 (48.7)

97 (47.3)

102 (66.2)

25 (64.1)

 Missing data

41

8

0

0

Change in alcohol use^b

 Quit before conception

130 (24.8)

36 (27.1)

1.09 (0.80–1.50)

11 (9.7)

5 (16.7)

1.71 (0.64–4.55)

 Quit after conception / still uses alcohol

394 (75.2)

97 (72.9)

102 (90.3)

25 (83.3)

 Missing data

326

80

41

9

Smoking

 Adequate (no preconceptional smoking)

712 (87.7)

183 (87.1)

0.99 (0.94–1.05)

142 (92.2)

35 (89.7)

0.97 (0.88–1.09)

 Inadequate (smoked after conception)

100 (12.3)

27 (12.9)

12 (7.8)

4 (10.3)

 Missing data

38

3

0

0

Change in smoking^b

 Quit before conception

11 (9.9)

4 (12.9)

1.30 (0.44–3.81)

8 (40.0)

4 (50.0)

1.25 (0.52–3.00)

 Quit after conception / still smokes

100 (90.1)

27 (87.1)

12 (60.0)

4 (50.0)

 Missing data

739

128

134

31

Adherence to lifestyle recommendations^c

 Adequate

305 (37.5)

83 (39.5)

1.05 (0.87–1.27)

48 (31.2)

13 (33.3)

1.07 (0.65–1.77)

 Inadequate

508 (62.5)

127 (60.5)

106 (68.8)

26 (66.7)

 Missing data

37

3

0

0