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Tumor Marker

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Pregnancy: Likelihood Ratios

Introduction: None written.

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

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The likelihood ratios of findings for Pregnancy 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.)
Tumor Marker
FindingResult +LR-LR
[ + ] Serum beta-hCG + 0 - inf0
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FindingResult +LR-LR
[ + ] Any Pregnancy Symptoms + 0 - 2.40.6
[ + ] Breast Signs on Exam + 0 - 2.70.6
[ + ] Chadwick Sign + 0 - 25.50.5
[ + ] Delayed Menses + 0 - 1.10.8
[ + ] Did Not Use Birth Control + 0 - 1.50.3
[ + ] Goodell's Sign No accuracy specified.
[ + ] Hegar's Sign No accuracy specified.
[ + ] Home Pregnancy Test Sensitivity = 75%
[ + ] Morning Sickness + 0 - 2.70.7
[ + ] Palpable Fundus + 0 - 2.80.9
[ + ] Patient Thinks She is Pregnant + 0 - 2.10.4
[ + ] Trans-Vaginal Ultrasound No accuracy specified.
[ + ] Urine beta-hCG Sensitivity = 90%
[ + ] Urine beta-hCG Sensitivity = 97%
[ + ] Uterine Artery Pulsation + 0 - 110.3
[ + ] Vaginal Exam Signs + 0 - 3.20.9