Answers are grounded in this paper and cite their sources.
SIMULATED, NOT MEASURED. A design and simulation study of a cold-exposure witness for an older person living alone: a stated degree-hour dose model (18 C waking, 12 C sleeping thresholds) over 3 dwellings and 4 heating behaviours in a 21-day cold snap, the witness specification (plus/minus 0.3 C sensor, cumulative-dose integrator, 3-day alert rule, $36 parts), and alert timing (1-7 days warning before the 150 degC*h concern line). The witness measures the room, not the person.
No takes yet. Share an insight, caveat, or question.
William Alexander Aldred (2026) studied this question.
Synapse has enriched 8 closely related papers on similar clinical questions. Consider them for comparative context: