Q.

NTSV Calculation

A.

A low-risk cesarean section occurs when a woman undergoes a cesarean section procedure when the baby is a single infant, is positioned head-first and the mother is full-term (at least 37 weeks), and has not given birth prior.1This is also referred to as a NTSV Caesarean birth. NTSV is abbreviated to mean Nulliparous (or first-time mother), Term, Singleton, Vertex (head first position). Low-risk cesarean section rates were calculated using the National Center for Health Statistics 2018 final natality data.2 Low-risk cesarean section rates were calculated as the number of cesarean section procedures that occurred to first-time mothers of a single infant, positioned headfirst with a gestational age of at least 37 weeks (NTSV) divided by the number of first-time mothers of a single infant, positioned headfirst with a gestational age of at least 37 weeks (NTSV) multiplied by 1,000.

1. Martin JA, Hamilton BE, Osterman MJK, Driscoll AK. Births: Final Data for 2018. Natl Vital Stat Rep 2019;68(13):1- Retrieved from: https://www.cdc.gov/nchs/data/nvsr/nvsr68/nvsr68_13-508.pdf

2. National Center for Health Statistics, final natality data 2018.

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