Table 1 Maternal and pregnancy characteristics of participants and non-participants of the malformations scan (gestational week 18–21)
From: Reasons for non-participation in malformation scans in Denmark: a cohort study
Non-participants | Participants | |
|---|---|---|
Characteristics | N (%)a | N (%)a |
Total | 153 (2.4) | 6227 (97.6) |
Age (years) | 27.8 (14–41) | 29.5 (16–52)c |
Smoking status | ||
Yes | 25 (16.3) | 325 (10.0)c |
No | 125 (81.7) | 5513 (88.5) |
Unknown | 3 (2.0) | 89 (1.4) |
Parity | ||
Nulliparous | 82 (53.6) | 2621 (42.1) |
Multiparous | 70 (45.8) | 3435 (55.2)c |
Unknown | 1 (0.7) | 171 (2.8) |
BMI | ||
< 18.5 | 10 (6.5) | 258 (4.1) |
18.5–24.99 | 85 (55.6) | 3522 (56.6) |
25.00–29.99 | 26 (17.0) | 1404 (22.6) |
≥ 30.00 | 24 (15.7) | 895 (14.4) |
Unknown | 8 (5.2) | 148 (2.4) |
Country of origin | ||
Denmark | 58 (37.9) | N/Ab |
Other | 93 (60.8) | N/Ab |
Unknown | 2 (1.3) | N/Ab |