The nurse educator is preparing a presentation on preterm labor (PTL) and birth (PTB). Which information does the nurse recognize as being inaccurate?

PTB is the leading cause of neonatal mortality and for antenatal hospitalization.

PTBs result in increased numbers of neonatal and infant deaths and long-term neurological impairment.

PTL is defined as regular uterine contractions resulting in cervical changes before 37 weeks gestation.

Average costs for premature/low birthweight infants are more than 10 times as high than for other newborns.