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Table 1 Basic Characteristics of 108 NIPT-Positive Patients

From: Analysis of the accuracy of Z-scores of non-invasive prenatal testing for fetal Trisomies 13, 18, and 21 that employs the ion proton semiconductor sequencing platform

Characteristics Numbers
Maternal age(years)
  ≤ 20 1
 20–24 5
 25–29 31
 30–34 21
 35–39 35
 40–45 13
  ≥ 45 2
 Mean 33.5
 Range 19–48
Gestation at NIPT tests(weeks)
 12–12 + 6 4
 13–13 + 6 9
 14–14 + 6 5
 15–15 + 6 8
 16–16 + 6 17
 17–17 + 6 14
 18–18 + 6 14
 19–19 + 6 17
 20–20 + 6 5
 21–21 + 6 6
 22–22 + 6 2
 23–23 + 6 5
 24–24 + 6 0
 25–25 + 6 2