Obstetrics and Gynecology International / 2018 / Article / Tab 1

Research Article

Evaluating the Agreement of Risk Categorization for Fetal Down Syndrome Screening between Ultrasound-Based Gestational Age and Menstrual-Based Gestational Age by Maternal Serum Markers

Table 1

Demographic data.

Mean  SDRange

Maternal age (year)
 1st trimester screening29.05 ± 5.6
 2nd trimester screening29.3 ± 5.7
 Total29.2 ± 5.613.7–45.8
Maternal weight (kilograms)
 1st trimester screening54.9 ± 10.0
 2nd trimester screening56.1 ± 1.0
 Total55.5 ± 10.130.5–138.0
Gestational age (days)
 1st trimester screening
  LMP dating87.2 ± 6.370–97
  US dating87.1 ± 5.370–98
 2nd trimester screening
  LMP dating112.9 ± 9.298–146
  US dating111.5 ± 7.298–142

LMP, last menstrual period; US, ultrasound.

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