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Example of a measurement day. An example of the time of cardiovascular (CV) outcome measurements and lag hours (h) for personal‐level environmental temperature (PET) monitoring in relation to the real time of day for an individual. For patients who had CV measurements (ie, BP) performed at 5 pm, lag hour 10 (h10) corresponds to a period between 6 am and 7 am, while lag hour 15 (h15) corresponds to a period between 1 am and 2 am during the same day.
