Skip to main content

Table 1 Demographic and clinical characteristics of the pregnant women (n = 12,243) enrolled in a study that investigated the use of noninvasive prenatal testing (NIPT) for screening for fetal sex chromosome aneuploidies

From: Cell-free DNA screening for sex chromosome aneuploidies by non-invasive prenatal testing in maternal plasma

Characteristicn (%)
Chinese12,243
Singleton pregnancy12,243
Gestational age at NIPT 12–20 weeks12,243
Routine prenatal screening results3932(32.12)
 High risk716(5.85)
 Intermediate risk2903(23.71)
 Low risk313(2.56)
Others8311(67.88)
IVF610(4.98)
Maternal age, years
 <357382(60.30)
354861(39.70)
Total NIPT screen-positive169(1.38)
  1. Abbreviation: IVF In vitro fertilization