Institutional collaboration one-pager · Print / PDF-ready

Butterfly Effect

Research-grade longitudinal sleep interpretation for stress, symptoms, and health burden. Strong within cohort, with two nightly routes now clearing promotion gates. Increasingly credible in open stress transport. Ready for structured institutional pilots.

Night routes
12
Auto-promotable nightly
2
Event stress portable
R² 0.316
Main bottleneck
Night transport

Current state

Strong today

  • Nightly within-cohort routes with held-out validation
  • Event-level portable stress
  • Governance, calibration, reporting, and PostgreSQL materialization

What new institutional data can unlock

  • Better nightly transport across cohorts
  • Cleaner outcome equivalence for anxiety and depression
  • Prospective validation with richer physiology

Minimum dataset

Required

  • Nightly sleep timing, duration, continuity
  • Nocturnal HR or HRV
  • Movement / actigraphy
  • Repeated stress, fatigue, anxiety, depression, pain, or symptom burden
  • Age, sex, medication, alcohol/caffeine, exercise, acute events

High-value extensions

  • PPG or IBI raw
  • Minute-level HR and movement
  • Respiration, SpO2, temperature
  • PSG subset with EEG, EOG, EMG

Recommended first pilot

Design

  • One institution
  • One longitudinal dataset
  • One primary outcome family
  • Retrospective harmonization first
  • Prospective extension second if justified

Outputs

  • Harmonization map
  • Benchmarking against open baselines
  • Interpretability and subgroup report
  • Transport / calibration feasibility decision

Posture

Research collaboration, not diagnostic deployment. Accepted, experimental, and support-only outputs remain explicitly separated.