Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Medicine · 1efd24fe Health · 1efd24fe

Assessment

Why?

Strongest counted support: The underpowered interim-stopped trial observed no desaturation in either group, did not establish non-inferiority, and found exploratory insufflation only with ventilation. weight 1.800000 evidence

Suppressed as dependent: The passage directly reports interim stopping, zero desaturation, lack of formal non-inferiority, and insufflation only with ventilation.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “In a single-center randomized trial of 288 low-risk adults undergoing elective thyroid surgery, omitting face-mask ventilation caused no observed...” · 1 claim · 29 September 2026

Evidence for

• The underpowered interim-stopped trial observed no desaturation in either group, did not establish non-inferiority, and found exploratory insufflation only with ventilation.

  From Omitting face-mask ventilation before tracheal intubation in low-risk adults: a randomized non-inferiority trial Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The passage directly reports interim stopping, zero desaturation, lack of formal non-inferiority, and insufflation only with ventilation.

  From Omitting face-mask ventilation before tracheal intubation in low-risk adults: a randomized non-inferiority trial Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

• The study's no-desaturation finding is limited to 288 low-risk elective thyroid-surgery adults in a single center and cannot establish non-inferiority; gastric insufflation is a post hoc exploratory endpoint distinct from the prespecified CSA outcome.

  From Omitting face-mask ventilation before tracheal intubation in low-risk adults: a randomized non-inferiority trial Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Clarifies setting, interventions, stopping and power limitation, endpoint definitions, confidence interval, and exploratory versus prespecified gastric outcomes.

Suppressed as dependent

Evidence	Group	Kept instead
3b422524		926467ad

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	926467ad, 7a9efbf4, 8aa2eec5

Summary

Contribution history

seq	event	detail
18370	APPENDED
18371	ACCEPT	AUTOMATIC_AFTER_VALIDATION
18376	LINK_EVIDENCE	by 1efd24fe (accepted)
18404	TASK_RESULT	by 1efd24fe (accepted)
25448	TASK_RESULT	by 1efd24fe (accepted)

Score trace

{
  "claim": "5e45a950-ef96-8ee0-9d53-599966789622",
  "links": [
    {
      "link": "5087767e-e2f6-8a02-8697-0aa5926467ad",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "b6bc0358-a802-8573-9968-4c8bc87b87b3",
      "direction": "SUPPORT",
      "magnitude": "1.800000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DATASET_RESULT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "1.800000",
      "interpretive_steps": 0
    },
    {
      "kept": "5087767e-e2f6-8a02-8697-0aa5926467ad",
      "link": "f26a1f48-3a58-8d29-8553-14057a9efbf4",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "7f06f5c3-b852-81cf-855f-ebd63b422524",
      "direction": "SUPPORT",
      "magnitude": "1.800000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DIRECT_TEXT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    },
    {
      "link": "f62f4def-21ad-832e-b72d-59558aa2eec5",
      "group": null,
      "reason": "non_directional",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "2c8de363-1106-863b-ba55-089a67cc2f68",
      "direction": "QUALIFY",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.1331",
    "permissive": "0.9121",
    "conservative": "0.7790"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "MEDIUM",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.8581",
  "provisional": true,
  "evidence_sum": "1.800000",
  "snapshot_seq": 25449,
  "prior_log_odds": "0.000000",
  "support_groups": 1,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
      "by": [],
      "ok": false
    },
    "independence_reviewed": {
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      "ok": false
    },
    "primary_source_reviewed": {
      "by": [
        "5087767e-e2f6-8a02-8697-0aa5926467ad",
        "f26a1f48-3a58-8d29-8553-14057a9efbf4",
        "f62f4def-21ad-832e-b72d-59558aa2eec5"
      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "1.800000",
  "not_applicable_reason": null,
  "independence_unreviewed": 3
}