Table 3

Appropriate Denominator* when Considering Pregnancy Outcomes and Complications by Week of Gestation

Pregnancies Delivered (PD)
Mixed
Ongoing Pregnancies (OP)

Forceps delivery
Antepartum stillbirth
Abruption
Vacuum delivery
Oligohydramnios (if measured)
Chorioamnionitis
Epidural use
Preeclampsia/Eclampsia
Primary cesarean
3rd and 4th degree lacerations
Onset of labor
Uterine rupture
Cesarean in labor
Antepartum hemorrhage

Postpartum hemorrhage
Premature rupture of membranes

Shoulder dystocia
Preterm birth

Neonatal outcomes



*The type of denominator denotes the population at risk for the outcome or complication

Caughey BMC Pregnancy and Childbirth 2007 7:18   doi:10.1186/1471-2393-7-18