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KCE reports vol. 6A Prenatale zorg 190
Study Ref Population Intervention Outcomes Results Comments Study
type
2: LMP unless discrepancy 42 weeks)
3. 8.1%
greater than 14 days; then,
4. 8.5%
ultrasound
Concordance between 5. 9.0%
3: LMP unless discrepancy LMP and ultrasound 6. 9.1%
greater than 10 days; then, estimates
ultrasound
At º 41 weeks:
4: LMP unless discrepancy
1. 20.9%
greater than 7 days; then,
2. 16.9%
ultrasound
3. 15.1%
5: LMP unless discrepancy
4. 13.4%
greater than 3 days; then,
5. 13.4%
ultrasound
6: ultrasound alone
6. 11.2%
Concordance within 14 days for
90.7% of births
1. b. Screening for structural abnormalities
Study Ref Population Intervention Outcomes Results Comments Study type EL
Williamson et 4 [298] 148 births Pregnancies of Sensitivity of 100% CSS 3
al., 1997
involving neural neural tube ultrasound
tube defects in defect affected screening for
England and births reported anencephaly
Wales from to the Office of between 14 to
1990 to 1991 Population 22 weeks
Census Survey (90/148
were
pregnancies
retrospectively were screened
reviewed
through
obstetric
records
by ultrasound)
Bricker et al., 4 [297] 96,633 babies Literature Prevalence of Overall: 2.09%, range HTA report SR 1b & 2b
2000
from 11 studies review to assess fetal anomalies 0.76% to 3.07%
EL