Yale Observation Scale

Six-domain clinical observation scale for overall appearance in febrile illness.

What is Yale Observation Scale?

Yale Observation Scale: Six-domain clinical observation scale for overall appearance in febrile illness. Active calculation. Population: Febrile children age…

Population and scope

Febrile Infant. Febrile children aged 3-24 months

Also searched as

YOS · yos · yale observation scale · escala observacion yale

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This page has an active local calculator in PedsCore. Entered values are processed in the browser, with references, limits and interpretation shown alongside the result.

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Clinical use

This PedsCore page brings together clinical information, implementation status and available evidence for Yale Observation Scale. It is intended for Febrile children aged 3-24 months. The tool belongs to Pediatric emergency and should be interpreted in the appropriate clinical context.

Interpretation and validation

Classic Yale Observation Scale: six domains scored 1, 3, or 5; total 6-30. PedsCore limits primary operational use to febrile children aged 3-24 months and does not allow a low score to be used to exclude serious bacterial infection in young infants.

PedsCore does not replace clinical judgement. Scores, rules and calculators are presented with evidence traceability and a visible implementation status.

Clinical review and maintenance

Implementation review and independent clinical review are shown separately. PedsCore does not attribute named reviewers or external endorsement without a public record supporting the claim. The repository preserves source, change and test history.

Editorial transparency

This page is part of an open-source project. Evidence level, implementation status, validation notes and sources are shown explicitly. It currently contains 2 catalog references. Content and calculation changes are reviewed through the public repository, automated tests and version traceability.

The absence of an active calculator is not a clinical recommendation: some tools remain reference-only while source, licensing, exact variant or validation still require review.

Each page lets you verify what is being assessed, which population the tool describes, whether local calculation is available, which limitations remain open and which references support implementation. This context matters when different publications, versions or adaptations share a similar name but are not interchangeable.