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Good Positive and Negative Likelihood Ratios

Good Negative Likelihood Ratio

Good Positive Likelihood Ratio

Poorly Diagnostic Findings

Findings With Unspecified Accuracy

Colon Cancer: Likelihood Ratios

Introduction: None written.

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

Tags: Gastrointestinal Problem Neoplasm Tag this Diagnosis.

Prevalence

Population / CalculatorPrevalence Comments / Study / Link
5%
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The likelihood ratios of findings for Colon Cancer 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
[ + ] Colonoscopy + 0 - 6.80.1
[ + ] Fecal Occult Blood + 0 - 5.90.1
[ + ] Fecal Occult Blood + 0 - 5.40.3
Good Negative Likelihood Ratio
FindingResult +LR-LR
[ + ] Secondary Screening Referral Guideline + 0 - 1.60.2
[ + ] Age + 0 - 1.80.3
[ + ] Age + 0 - 1.40.3
Good Positive Likelihood Ratio
FindingResult +LR-LR
[ + ] Fecal Occult Blood + 0 - 40.8
[ + ] Age + 0 - 2.40.6
[ + ] Rectal Mass + 0 - 2.30.8
Poorly Diagnostic Findings
FindingResult +LR-LR
[ + ] Fecal Occult Blood + 0 - 1.71
[ + ] Family History of Colon Cancer + 0 - 1.80.9
[ + ] Weight + 0 - 1.80.9
[ + ] Diarrhea + 0 - 0.71.1
[ + ] Constipation + 0 - 0.51.2
[ + ] Rectal bleeding + 0 - 1.30.8
[ + ] Changes in Bowel Habits + 0 - 1.30.8
[ + ] Gender + 0 - 1.40.7
Findings With Unspecified Accuracy
FindingResult +LR-LR
[ + ] S. Bovis bacteremia No accuracy specified.
[ + ] CEA No accuracy specified.