Esa Hamalainen

  • Citations Per Year
Learn More
We analyzed the frequency and possible causes of false-negative (Fn) screening results in first-trimester combined Down syndrome screening in Finland. During the study period (May 1, 2002, to December 31, 2008), 76,949 voluntary women with singleton pregnancies participated in screening. Maternal age at screening, week of gestation, levels of(More)
OBJECTIVE To evaluate the performance of first-trimester combined screening in 5-year periods according to maternal age in a low-risk population. DESIGN A prospective study. SETTING Multicenter study in Finland. POPULATION A total of 76949 voluntary women with singleton pregnancies participated in first-trimester combined screening in public(More)
  • 1