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Table 1 Patient characteristics of 9985 pregnancies undergoing the NIPT test

From: Cell-free DNA screening for sex chromosomal aneuploidies in 9985 pregnancies: Italian single experience

Clinical characteristicsMean value (range)
Maternal age32.5 (20–50)
Body mass index, kg/m224.3 (14.5–43.5)
Gestational age, wk16.3 (10–26)
Indications for NIPTRatios %
Maternal serum screening result26.3
Advanced maternal age ≥ 3541.2
Others (family history, IVF pregnancy, decision of perinatology council, etc.)32.5
  1. wk week, IVF in vitro fertilization, NIPT non invasive prenatal test