FA-64789 / Clinical triage scoring / Member archive

Four-item dehydration scale with weight-loss override: severe weight-loss override · case 04

A measured 10% weight loss does not force the severe category.

Member previewVariant 4 · 3 implementations · 9 checks per implementation

Case contract

Input {appearance (normal|thirsty_restless|drowsy_limp), eyes (normal|slightly_sunken|very_sunken), mucous (moist|sticky|dry), tears (present|decreased|absent), weight_loss_pct (or null)}. Items score 0/1/2 in the listed order. Category: 0 NONE, 1-4 SOME, 5-8 MODERATE_SEVERE. A measured weight loss >= 10% forces MODERATE_SEVERE; >= 3% raises NONE to SOME but never lowers a category. Return {score, category}.

Why this case matters

Ordinal clinical scales combined with an objective override can fail in item mapping, band edges and override direction.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
weight loss exactly 10 percent	`{"category": "SOME", "score": 1}`	`{"category": "MODERATE_SEVERE", "score": 1}`	Failed

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