{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2GQG4DLSKAHGYVCZ6E5V5DBOYK","short_pith_number":"pith:2GQG4DLS","schema_version":"1.0","canonical_sha256":"d1a06e0d72500e6c5459f13b5e8c2ec28430db0c50038f76be17248ad449add7","source":{"kind":"arxiv","id":"1808.06999","version":1},"attestation_state":"computed","paper":{"title":"A Heterogeneity Based Case-Control Analysis of Motorcyclist Injury Crashes: Evidence from Motorcycle Crash Causation Study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"Aemal Khattak, Asad Khattak, Behram Wali","submitted_at":"2018-08-17T00:13:51Z","abstract_excerpt":"The main objective of this study is to quantify how different policy-sensitive factors are associated with risk of motorcycle injury crashes, while controlling for rider-specific, psycho-physiological, and other observed/unobserved factors. The analysis utilizes data from a matched case-control design collected through the FHWA Motorcycle Crash Causation Study. In particular, 351 cases (motorcyclists involved in injury crashes) are analyzed vis-a-vis similarly-at-risk 702 matched controls (motorcyclists not involved in crashes). The paper presents a novel heterogeneity based statistical analys"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1808.06999","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-17T00:13:51Z","cross_cats_sorted":[],"title_canon_sha256":"37e46e26c4b748327bfe6420dcbfc329837a457bd2be841d1de7a6b6bce2c8b8","abstract_canon_sha256":"507b46e5f32e93d42695c5ff1dd6a3feca0e3f531e4c49fc5cc3c896b93f1463"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:38.432275Z","signature_b64":"KBySKHjSTBL0QQWSGWlDx45T9r+WkTin/DC8RqvOHsxYcpnyxgtrOKaIziPjPKfaVObXtD1ERCyGMzj9t4AqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1a06e0d72500e6c5459f13b5e8c2ec28430db0c50038f76be17248ad449add7","last_reissued_at":"2026-05-18T00:07:38.431603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:38.431603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Heterogeneity Based Case-Control Analysis of Motorcyclist Injury Crashes: Evidence from Motorcycle Crash Causation Study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"Aemal Khattak, Asad Khattak, Behram Wali","submitted_at":"2018-08-17T00:13:51Z","abstract_excerpt":"The main objective of this study is to quantify how different policy-sensitive factors are associated with risk of motorcycle injury crashes, while controlling for rider-specific, psycho-physiological, and other observed/unobserved factors. The analysis utilizes data from a matched case-control design collected through the FHWA Motorcycle Crash Causation Study. In particular, 351 cases (motorcyclists involved in injury crashes) are analyzed vis-a-vis similarly-at-risk 702 matched controls (motorcyclists not involved in crashes). The paper presents a novel heterogeneity based statistical analys"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.06999","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1808.06999","created_at":"2026-05-18T00:07:38.431696+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.06999v1","created_at":"2026-05-18T00:07:38.431696+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.06999","created_at":"2026-05-18T00:07:38.431696+00:00"},{"alias_kind":"pith_short_12","alias_value":"2GQG4DLSKAHG","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2GQG4DLSKAHGYVCZ","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2GQG4DLS","created_at":"2026-05-18T12:32:02.567920+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK","json":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK.json","graph_json":"https://pith.science/api/pith-number/2GQG4DLSKAHGYVCZ6E5V5DBOYK/graph.json","events_json":"https://pith.science/api/pith-number/2GQG4DLSKAHGYVCZ6E5V5DBOYK/events.json","paper":"https://pith.science/paper/2GQG4DLS"},"agent_actions":{"view_html":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK","download_json":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK.json","view_paper":"https://pith.science/paper/2GQG4DLS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.06999&json=true","fetch_graph":"https://pith.science/api/pith-number/2GQG4DLSKAHGYVCZ6E5V5DBOYK/graph.json","fetch_events":"https://pith.science/api/pith-number/2GQG4DLSKAHGYVCZ6E5V5DBOYK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK/action/storage_attestation","attest_author":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK/action/author_attestation","sign_citation":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK/action/citation_signature","submit_replication":"https://pith.science/pith/2GQG4DLSKAHGYVCZ6E5V5DBOYK/action/replication_record"}},"created_at":"2026-05-18T00:07:38.431696+00:00","updated_at":"2026-05-18T00:07:38.431696+00:00"}