GetTheDiagnosis.org

Welcome, guest.
Login or Sign up to edit.

Add an entry

Search:
 

Tools

Add a finding for this diagnosis

Add prevalence for this diagnosis

Switch to display mode

Switch to sensitivity and specificity

Sort findings by Tag

Sort findings by Differential Diagnosis

Jump To

Good Positive and Negative Likelihood Ratios

Good Negative Likelihood Ratio

Poorly Diagnostic Findings

Spinal Discitis and Osteomyelitis: Likelihood Ratios

Introduction: Infection of the vertebral bodies, centered at the intervertebral disc. The infection often spreads to the prevertebral soft tissues and into the epidural space. It most commonly affects the lumbar spine.

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

Tags: Infection Neurologic Tag this Diagnosis.

The likelihood ratios of findings for Spinal Discitis and Osteomyelitis 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.)
Good Positive and Negative Likelihood Ratios
FindingResult +LR-LR
[ + ] MRI + 0 - 120
[ + ] Gallium WBC Scan and Bone Scan + 0 - inf0.1
[ + ] Tc99m Bone Scan + 0 - 9.70.1
Good Negative Likelihood Ratio
FindingResult +LR-LR
[ + ] Spine X-Ray + 0 - 1.90.3
Poorly Diagnostic Findings
FindingResult +LR-LR
[ + ] Elevated CRP Sensitivity = 100%
[ + ] Localized Pain Sensitivity = 95%
[ + ] Elevated ESR Sensitivity = 80%
[ + ] Blood Cultures Sensitivity = 56%
[ + ] Focal Neurological Signs Sensitivity = 40%
[ + ] Leukocytosis Sensitivity = 40%