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. 2021 Feb 1;17(2):177–184. doi: 10.5664/jcsm.8810

Figure 2. Search interest in insomnia and cumulative number of COVID-19 deaths.

Figure 2

Daily search queries for the search term “insomnia” worldwide (A) and in the United States (B) during the first 5 months (January through May 2020) of the COVID-19 pandemic compared with the same 5 months of 2017–2019. There was a significant increase in search interest for “insomnia” in April and May of 2020 compared with the same months in previous years, both worldwide (A) (P < .0001) and in the United States (B) (P < .0001). This increase in search interest for “insomnia” coincides with the increase in the cumulative number of COVID-19–related deaths (logarithmic scale) both worldwide (17 March–22 April; P < .0001) (C) and in the United States (17 March–7 May; P < .0001) (D). COVID-19 = 2019 coronavirus disease.