Welcome, guest.
Login or Sign up to edit.

Add an entry



Add a finding for this diagnosis

Add prevalence for this diagnosis

Switch to display mode

Switch to likelihood ratios

Sort findings by Tag

Sort findings by Differential Diagnosis

Jump To

Sensitive and Specific Findings

Poorly Diagnostic Findings

Preterm Labor: Sensitivity and Specificity

Introduction: Generally defined as birth <37 weeks. See also tests to determine Risk of Preterm Labor. The patients here are symptomatic with labor.

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

Tags: Obstetrical Tag this Diagnosis.


Population / CalculatorPrevalence Comments / Study / Link
women hospitalized for preterm labor between 18 and 34 completed weeks' gestation 13.4% for delivery <35wk

Am J Obstet Gynecol. 2006 Jan;194(1):138-43. PMID 16389023

Women with preterm labor 17.1% for delivery within 28 days

Acta Obstet Gynecol Scand. 2002 Jan;81(1):58-63. PMID 11942889

More, Edit...

The sensitivity and specificity of findings for Preterm Labor are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Sensitive and Specific Findings
FindingResult SensitivitySpecificity
[ + ] Cervical Length Plus fFN + 0 - 86%90%
Poorly Diagnostic Findings
FindingResult SensitivitySpecificity
[ + ] Cervical Length Plus fFN + 0 - 67%81%
[ + ] Fetal Fibronectin + 0 - 63%81%
[ + ] Cervical Length + 0 - 75%63%