State of the art on ChatPPG

#1 on MESA Apnea-hypopnea index

12.97MAE (events/h) (lower is better)

Method: PaPaGei-S
Reported in: PaPaGei: Open Foundation Models for Optical Physiological Signals · Tables 3 and 4
Compared: 9 results under the same protocol; runner-up PaPaGei-P 13.85
Protocol: subject-level train/val/test · within-dataset · linear probe on frozen embeddings

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SOTA on ChatPPG: Apnea-hypopnea index · MESA

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Results as reported by the authors; not independently reproduced. Awarded 2026-10-20; re-checked on every atlas sync.