{"buyer_scenarios":[{"fit":"best_suited","scenario":"Straight staircases measuring approximately 26–30 inches wide without bends or turns (anthropic)."},{"fit":"best_suited","scenario":"Households needing maximal stair clearance when the lift is folded away (anthropic, google)."},{"fit":"best_suited","scenario":"Installations needing an optional hinged rail at the bottom to reduce obstruction or trip exposure (, -1)."},{"fit":"best_suited","scenario":"Buyers prioritizing a lower installed price than curved or specialty models (-1, )."}],"citations":{"source_mix":{"company_owned":21,"independent":18,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":33,"partial":6},"total_sources":39,"unique_domain_count":22},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-09-26","predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Stairlifts for Narrow Staircases","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","grok","openai"],"predicate":"final_consensus_rank","qualifier":"Compact & Narrow Stairways","subject":"Acorn 130 Straight Stairlift","unit":"rank","value":5},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","grok","openai"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Acorn 130 Straight Stairlift","unit":"platforms","value":5}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":4.2,"best_rank":2,"entity_id":"entity-001","entity_type":"company","final_rank":5,"name":"Acorn 130 Straight Stairlift","platform_mentions":5,"platform_share":0.7142857142857143}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/compact-narrow-stairways/acorn-130-straight-stairlift.json","page_url":"https://aginginplaceindex.com/stairlifts/compact-narrow-stairways/acorn-130-straight-stairlift","report_type":"fit_review","study_id":"AIPI-STUDY-F9B1F1340D6D","title":"Acorn 130 Straight Stairlift Review for Narrow Staircases"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","6 of 7 included platforms returned a usable fit assessment; disclose this as a methodology limitation and do not describe the fit findings as unanimous, 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.","Company-owned citations materially outnumber independent citations; do not describe company claims as independently verified.","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_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-09-26 11:17:05.882857+00","research_date":"2026-09-26","source_snapshot_sha256":"d21ad258188ab081f5e13b238ec791e40020a55f84f9b034391ffea50e4c79fe","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":19,"qualified_finalists":7,"ranking_unit":"Stairlift model and manufacturer"},"schema_version":4,"summary":"The Acorn 130 Straight Stairlift is a good fit for many compact and narrow straight stairways, but only after measurement. Five of seven configured platforms named it during the ranking stage, and six returned a usable fit assessment. Its strongest qualification is a published top-swivel width requirement of roughly 26 inches combined with an approximately 12.25-inch folded profile and folding seat, footrest, and armrests (, -1, ). The main limitation is that the 26-inch figure describes swivel clearance at the top landing, not a guarantee for every sub-30-inch staircase; landing geometry,…","target_buyer":"Homeowners needing a stairlift installed on narrow stairways (under 30 inches) without blocking foot traffic","topic":{"base_category":"Stairlifts","category_criteria":["Minimum staircase width requirement","folded profile depth","slim rail design","folding footrest and armrest clearance","swivel radius"],"geography":"United States","slug":"best-stairlifts-for-narrow-staircases","title":"Best Stairlifts for Narrow Staircases","use_case":"Compact & Narrow Stairways"}}