{"citations":{"source_mix":{"company_owned":16,"independent":20,"unclear":1},"sources_referenced_by_questions":0,"support_mix":{"direct":29,"partial":4},"total_sources":37,"unique_domain_count":21},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-09-27","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Standing Stairlifts","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","google","grok","openai"],"predicate":"final_consensus_rank","qualifier":"Standing & Semi-Standing Stair Travel","subject":"Acorn Stairlifts","unit":"rank","value":3},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","google","grok","openai"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Acorn Stairlifts","unit":"platforms","value":4},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-27","platform_support":["anthropic","grok","google"],"predicate":"fit_rating_count","qualifier":"good","subject":"Acorn Stairlifts","unit":"platforms","value":3},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-27","platform_support":["openai","deepseek","perplexity"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Acorn Stairlifts","unit":"platforms","value":3},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-27","platform_support":["kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Acorn Stairlifts","unit":"platforms","value":1}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":2.75,"best_rank":1,"entity_id":"entity-001","entity_type":"company","final_rank":3,"name":"Acorn Stairlifts","platform_mentions":4,"platform_share":0.5714285714285714}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/standing-semi-standing-stair-travel/acorn-stairlifts.json","page_url":"https://aginginplaceindex.com/stairlifts/standing-semi-standing-stair-travel/acorn-stairlifts","report_type":"fit_review","study_id":"AIPI-STUDY-CF199096089C","title":"Acorn Stairlifts Review for Standing & Semi-Standing Stair Travel"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","All included platforms evaluated fit, but platformmentions counts only platforms that named the entity during ranking discovery.","Do not resolve conflicting product names, pricing, or capabilities by guessing; describe the conflict and tell buyers what to verify.","The supplied URLs were collected from platform responses and were not independently validated by the writer stage.","Platform-reported research dates differ from the authoritative run date; disclose this as a methodology limitation.","Citations are platform-reported evidence, not independently verified facts. No-search model claims require explicit verification before being described as current facts."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Aging in Place Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-09-27 12:52:02.340553+00","research_date":"2026-09-27","source_snapshot_sha256":"c6d5c051e94f78621618e7b43a81f96c9e982fc70e7ea1a17a2870df7245c295","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":11,"qualified_finalists":4,"ranking_unit":"Standing stairlift model and manufacturer"},"schema_version":4,"summary":"Acorn stairlifts is a mixed fit for standing and semi-standing stair travel. Four of the seven platforms in this study named Acorn during the ranking stage — a 57% share of included platform responses — with an average listed rank of 2.75 and a best rank of 1. The strongest reason to consider Acorn is that it publicly references perch and sit/stand configurations (Acorn 120 Perch, Acorn 130 Perch, Sit/Stand) intended for users who struggle to bend their knees, and one U.S. device record confirms an Acorn 130 Perch Left hand unit in commercial distribution . The main limitation is that…","target_buyer":"Users who struggle to bend their knees or sit fully but can safely ride in a supported standing or semi-seated position","topic":{"base_category":"Stairlifts","category_criteria":["Standing support design","perch seat stability","safety harness or grab bar quality","minimum stair width","obstruction sensors","ride smoothness","weight capacity"],"geography":"United States","slug":"best-standing-stairlifts","title":"Best Standing Stairlifts","use_case":"Standing & Semi-Standing Stair Travel"}}