Contribution seq 25502

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "pm25_scholars_primary_20260929",
      "title": "Impacts of PM2.5 air pollution on high-skilled worker productivity in China",
      "publisher": "Nature Human Behaviour",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T06:31:00Z",
      "canonical_uri": "https://www.nature.com/articles/s41562-026-02576-4",
      "publication_date": "2026-09-21"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "pm25_population",
      "excerpt": "Here we examined the causal impact of air pollution on the academic publications of individual scholars in China.",
      "locator": {},
      "source_id": "pm25_scholars_primary_20260929",
      "excerpt_hash": "sha256:de56445687efc0c57ae716de39c775e1076e9085fac561f62278f78b0e39b629",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "pm25_exposure",
      "excerpt": "We found that an increase of 1 μg m−3 in the annual concentration of PM2.5... The mean PM2.5 concentration was 45.91 over the study period.",
      "locator": {},
      "source_id": "pm25_scholars_primary_20260929",
      "excerpt_hash": "sha256:ee3875fcbcaa36756b3ababa71790788b475b4c7dcf9e1c634238c2395fbf14f",
      "locator_type": "QUOTE"
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    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "pm25_outcomes",
      "excerpt": "A 1% increase in PM2.5 concentration results in a reduction of approximately 1,053 publications nationwide. This effect was more pronounced during years of heavy pollution, especially among highly productive and younger scholars. Further analyses showed that higher pollution levels reduced academic working hours, increased hospital visits and hindered scholarly collaborations.",
      "locator": {},
      "source_id": "pm25_scholars_primary_20260929",
      "excerpt_hash": "sha256:83ed0182f7ebbd574b65247395b3527f2b5d9cd6d7b860912f907a48b4cdd010",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "pm25_data_scope",
      "excerpt": "Due to privacy constraints regarding mobile phone signalling data and the proprietary nature of the longitudinal publication dataset, the full micro-level tracking data are not publicly available.",
      "locator": {},
      "source_id": "pm25_scholars_primary_20260929",
      "excerpt_hash": "sha256:42ec72eaa83ecffbd50e2d4a943c0ef57227b14051613f8671d3db415dd21f03",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_CLAIM",
      "ref": "pm25_scope_qualifier",
      "claim_type": "OBSERVATIONAL",
      "qualifiers": {},
      "canonical_text": "The claim concerns additional analyses of individual academic scholars in China, using annual PM2.5 exposure whose study-period mean was 45.91; the reported work-hour, hospital-visit, and collaboration associations are not the primary publication-count outcome, and the full micro-level tracking data are not publicly available.",
      "affirms_not_private_individual": true
    },
    {
      "op": "CREATE_CLAIM_EDGE",
      "to_claim_id": "48f68f84-15f6-86ec-a8c3-2e0976fdaebd",
      "from_claim_id": "pm25_scope_qualifier",
      "relationship_type": "NARROWS"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_pm25_population",
      "statement": "The study population was individual academic scholars in China, not an unrestricted high-skilled-worker population.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "pm25_population"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_pm25_exposure",
      "statement": "The exposure was annual PM2.5 concentration, with a reported study-period mean of 45.91.",
      "observation_type": "MEASUREMENT",
      "source_location_id": "pm25_exposure"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_pm25_outcomes",
      "statement": "Work hours, hospital visits, and collaborations were reported as further analyses alongside the primary publication outcome.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "pm25_outcomes"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_pm25_data_scope",
      "statement": "Full micro-level tracking and longitudinal publication data were not publicly available because of privacy and proprietary constraints.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "pm25_data_scope"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Limits population and jurisdiction.",
      "claim_id": "48f68f84-15f6-86ec-a8c3-2e0976fdaebd",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_pm25_population",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Adds annual exposure metric and study-period mean.",
      "claim_id": "48f68f84-15f6-86ec-a8c3-2e0976fdaebd",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_pm25_exposure",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies that the three outcomes were further analyses.",
      "claim_id": "48f68f84-15f6-86ec-a8c3-2e0976fdaebd",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_pm25_outcomes",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Adds data-access and micro-level sampling limitation.",
      "claim_id": "48f68f84-15f6-86ec-a8c3-2e0976fdaebd",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_pm25_data_scope",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the full accessible Nature Human Behaviour article page, especially Abstract, Data availability, and extended-data descriptions. Checked population, jurisdiction, exposure metric and baseline, primary versus additional outcomes, denominator scope, and whether the statement generalized beyond Chinese academic scholars."
}

Rows created

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• EvidenceClaimLink e78f7d51-d2ce-873d-a0d7-026a9044b4c9 (accepted seq 25503)
• EvidenceClaimLink 1ec87a71-3101-8727-aaab-fe024724777c (accepted seq 25503)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"environment","task_type":"QUALIFIER_CHECK","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}