Successful Induction of Labor: Likelihood Ratios

Introduction: Ability to induce labor with pitocin leading to vaginal delivery, vs needing a cervical ripening agent or having to perform C-section.

[Edit Diagnosis] [Merge dx] [Add prevalence]

Tags: Obstetrical Tag this Diagnosis.

Prevalence

The likelihood ratios of findings for Successful Induction of Labor are listed below. See the left navigation bar to change the display.

Good Positive Likelihood Ratio

Finding	+LR	-LR	Comments, Study
Bishop Score	2.1	0.7	Bishop Score >= 5 (varying cutoffs used historically): position 0-2 consistency 0-2 effacement 0-3 dilation 0-3 station 0-3 See e.g. http://www.fpnotebook.com/OB/Exam/BshpScr.htm for details. Study: Clin Obstet Gynecol. 2006 Sep;49(3):573-84. PMID: 16885664

Poorly Diagnostic Findings

Finding	+LR	-LR	Comments, Study
Transvaginal US	1.9	0.6	cervical length <=20mm Study: Clin Obstet Gynecol. 2006 Sep;49(3):573-84. PMID: 16885664
Fetal Fibronectin	1.6	0.6	Study: Clin Obstet Gynecol. 2006 Sep;49(3):573-84. PMID: 16885664