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Evidence Engine
Built for Dr. Henderson · Nutramax · Nutraceutical Science
Grade the strength of evidence behind a claim across a body of studies — transparently, and show what would raise the grade.
Claim under examination
Body-of-Evidence Grade · All Weights Visible
4 studies · grade B−
B−
score 64/100
Moderate, with gaps
Across 4 studies, 68% of the decided evidence weight points toward the claim, with moderate consistency.
68%
supports
Direction
Consistency across studies
36% agreement
Evidence mass (quality × size)
94% · total weight 37.37
Each study's signed pull on the grade
12.81
8.40
0.00
10.06
Green = supports · red = null/refutes · gold = mixed (counts as uncertainty, not support). Bar height = design weight × size factor.
Weight ledger — nothing hidden
| Study | Design × | Size factor | = Weight | Result | Signed pull |
|---|---|---|---|---|---|
| RCT · n=1,583 | 4 | 3.20 | 12.81 | Supports | +12.81 |
| Cohort · n=622 | 3 | 2.80 | 8.40 | Supports | +8.40 |
| Observational · n=1,100 | 2 | 3.05 | 6.09 | Mixed | +0.00 |
| RCT · n=318 | 4 | 2.52 | 10.06 | Null | -10.06 |
| support 21.21 · null 10.06 · mixed 6.09 | Σ 37.37 | direction 68% · mass 94% → 64 | |||
Seal this assessment
Fingerprint the exact studies behind grade B−. The hash is reproducible — anyone can recompute it. Edit a study afterward and the public verifier turns red.
Grade Seal · SHA-256
# evidence-engine · grade seal
# Seal an assessment to fingerprint the studies behind a grade.
# Anyone can recompute the same SHA-256 from the same studies — edit one and it breaks.
Evidence-graded, not cherry-picked: this tool weighs the whole body of studies and shows its gaps. It is informational only and not medical advice — defer to a qualified clinician for any health decision. Seed studies are illustrative summaries, not a substitute for reading the source trials.
Showcase demo for the America's Future 80th Anniversary Summit. Showcase · best home: LLC (commercial). Seeded with realistic sample data; runs payment-dark (no billing). Not a production system.