{
  "protocol_version": "1.0",
  "frozen_date": "2026-09-29",
  "file": "null-institute-r32-underhydration-mortality-protocol-v1.md",
  "sha256": "994638f80462929a89f65bf3320afb883d7a102291d8959a9a7bf13cb69cf015",
  "primary_exposure": "underhydrated vs euhydrated",
  "primary_outcome": "all-cause mortality through 2019",
  "reproduction_vintage": 2015,
  "extension_vintage": 2019,
  "status": "frozen before target-cohort 2019 outcome analysis"
}