LR− Calculator
Compute negative likelihood ratio LR⁻ = (1 − sens) / spec.
Input Data
Input Sensitivity sens.
Input Specificity spec.
Results
0.222222
LR⁻ = (1 − sens) / spec.
At a glance:LR− Calculator: enter parameters to compute results; complements related calculators.
Formula
LR⁻ = (1 − sens) / spec.
How to Use
- Enter sensitivity and specificity.
- It returns LR−.
Case Studies
sens=0.8, spec=0.9 → LR−≈0.222
LR− = 0.2/0.9 ≈ 0.222.
FAQ
How small is a good LR−?
LR− < 0.1 strongly rules out disease; near 1 has no discrimination.
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.