{"public_id":"cl_dfd9744be81d4144c474a3e17ae07b48","status":"active","superseded_by_public_id":null,"corpus_id":64575572,"text":"A single case study example illustrates issues of access and purposive sampling, while a second example illustrates self-selection sampling across multiple organizations and sample size concerns.","confidence":0.93,"paper":{"corpus_id":64575572,"title":"Choosing research participants","url":"https://sah.borca.ai/papers/64575572"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.93,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_419ffdeeeb577961cc3a64776084f8e8","name":"self-selection sample","description":"A sample formed by participants who volunteer or opt in themselves.","types":["sampling method"],"url":"https://sah.borca.ai/concepts/co_419ffdeeeb577961cc3a64776084f8e8"},{"public_id":"co_5ec16873ce8dc9347c9b5661526d0302","name":"purposive sampling","description":"A sampling approach that deliberately selects participants based on their relevance to the research focus.","types":["sampling method"],"url":"https://sah.borca.ai/concepts/co_5ec16873ce8dc9347c9b5661526d0302"},{"public_id":"co_c117b092d20e74f2c0014f1dc1828cb6","name":"single case study","description":"An in-depth investigation centered on one case or organization.","types":["study design"],"url":"https://sah.borca.ai/concepts/co_c117b092d20e74f2c0014f1dc1828cb6"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_dfd9744be81d4144c474a3e17ae07b48"}