Screening programs for age-related functional decline often measure success by reach alone, missing whether identified individuals actually receive follow-up care, engage with interventions, or achieve measurable improvement. A staged conversion cascade framework tracks progression from case finding through sustained intervention use to clinically meaningful functional gain.
Key Points
- Current screening metrics capture reach, not actionable clinical outcomes
- Conversion cascade tracks six stages from identification to functional improvement
- Framework reveals where interventions fail to translate into sustained benefit
Longevity Analysis
Healthy aging programs typically stop at detection—identifying dysfunction without ensuring that older adults progress through assessment, planning, linkage, and sustained engagement with interventions. This gap between screening and sustained behavior change is a critical interference point in longevity optimization. The conversion cascade addresses this directly by making visible where the chain breaks: patients identified with declining sensory or oral capability may never receive a plan, receive a plan but never link to care, link to care but stop using it, or use it inconsistently. Understanding these failure points allows practitioners to intervene precisely where support drops off—whether that means simplifying referral pathways, improving adherence monitoring, or redesigning follow-up structures. For individual practitioners, this framework transforms how you interpret screening data: a high detection rate without corresponding conversion rates signals systemic friction, not pr
Original published by The Lancet Healthy Longevity, by Xiaoting Huang, Arthur C K Chia, Lian Leng Low, Sharon E Straus.