Research Article
Ultrasound in Prenatal Diagnostics and Its Impact on the Epidemiology of Spina Bifida in a National Cohort from Denmark with a Comparison to Sweden
Table 2
Maternal characteristics from the Danish Fetal Medicine Database;
–Mann–Whitney test,
’s
-test,
test;
: European, Middle Eastern, North African, Hispanic;
-Caucasian: Afro Caribbean, Asian, Oriental.
| Characteristic | week 22 | week 22 | value | | |
| Maternal age, years [95% CI] | 29.7 [29.0; 30.4] | 29.8 [27.4; 32.1] | 0.88 | BMI, [95% CI] | 25.6 [24.7; 26.5] | 28.1 [24.9; 31.3] | 0.08 | Smokers, % [95% CI] | 3.8 [1.5; 7.6] | 6.2 [0.2; 30.2] | 0.62 | Ethnicity, % [95% CI] | | | | (i) Caucasian | 93.2 [88.6; 96.3] | 86.7 [59.5; 98.3] | 0.35 | (ii) Non-Caucasian | 6.8 [3.7; 11.4] | 13.3 [1.7; 40.5] | Conception, % [95% CI] | | | | (i) Spontaneous | 90.1 [84.8; 94.0] | 93.8 [69.8; 99.8] | 0.63 | (ii) Fertility treatment | 9.9 [6.0; 15.2] | 6.3 [0.2; 30.2] |
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