. 2021 Aug 11;23(8):e23508. doi: 10.2196/23508
©Sujeong Hur, Ji Young Min, Junsang Yoo, Kyunga Kim, Chi Ryang Chung, Patricia C Dykes, Won Chul Cha. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 11.08.2021.
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Figure 1.
Case and control definitions using the time window in the time-series data set. ICU: intensive care unit.