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. Author manuscript; available in PMC: 2021 Apr 1.
Published in final edited form as: Am J Obstet Gynecol. 2020 Jan 10;222(4):369.e1–369.e11. doi: 10.1016/j.ajog.2020.01.002

Table 7:

Absolute differences per 1000 women in types of resources that significantly differed between groups

Induction of labor Expectant management Difference
Antepartum
Ambulatory visits 569 1775 −1206
  Office visit, routine prenatal care 376 1127 −751
  Office visit, unanticipated 5 29 −24
  Urgent care/emergency department/ obstetric triage visit 188 619 −432
Inpatient days 9 22 −13
Tests prior to delivery admission 294 992 −698
  Non-stress test 124 459 −334
  Sonogram* 76 258 −183
  Laboratory test 77 195 −118
  Urinalysis 17 80 −63
Treatments 23 82 −59
  Analgesic 5 27 −22
  IV hydration 5 19 −14
  Antibiotic 3 7 −4
  Other medication 10 30 −20
Delivery admission
 Labor and delivery (patient days) 908 657 250
 Ripening agent 846 370 476
  Balloon catheter 404 186 218
  Laminaria 1 0 1
  Cervidil 62 23 39
  PGE1 or gel 378 161 218
 Oxytocin infusion 845 733 112
 Intrauterine pressure catheter 418 366 52
 Magnesium sulfate infusion 19 29 −10
 Antibiotic infusion 427 458 −31
 Maternal postpartum LOS (days) 2136 2181 −45
  Postpartum unit 2135 2176 −41
  Intensive care unit 1 5 −4
 CPAP/High-flow oxygen 27 39 −11
 Neonatal LOS (days) 2373 2485 −113
  Well-baby unit 1911 1935 −24
  Intermediate or ICU 462 551 −89
Post-discharge through 4–8 weeks postpartum
 Office, visit unanticipated 288 215 73
 Serum bilirubin 93 43 49

Difference = Induction of labor – Expectant Management.

ED, emergency department; PGE1, prostaglandin E1; LOS, length of stay; HFO2, high-flow oxygen; CPAP, continuous positive airway pressure; ICU, intensive care unit.

*

Includes all sonographic exams (i.e., biophysical profiles, modified biophysical profiles, umbilical artery Dopplers, amniotic fluid volume, fetal position, and fetal growth).

Includes all blood tests and cultures.

Includes medications such as anti-emetics, anti-histamines, and anti-depressants Number of missing values: labor and delivery duration (n=2), neonatal length of stay (n=5).