The extent of stay-at-home behavior, as calculated from cell phone location data in public databases, is a significant mediator of the impact of pandemic severity on mental health. Previous research by our team has identified the search volume for the keyword “insomnia” as the most sensitive indicator of the mental health impact of the COVID-19 pandemic across different countries (Y. H. Lin, T. W. Chiang, et al., 2020). In this study, we used the search volume of “insomnia” and “suicide” as mental health indicators, and discovered that the degree of staying at home played the most important mediating role in the impact of pandemic severity on mental health.
The search volume for the keyword “vaccine” on the internet can reflect and continuously track the public’s willingness to get vaccinated. Traditional survey methods cannot provide comprehensive and continuous data with high time resolution. This study uses Google Trends data from March 19, 2021, to May 25, 2021, to examine changes in search volume for the keyword “vaccine” in Taiwan during the period from the start of the vaccination campaign at the end of March last year to the subsequent outbreak of local COVID-19 cases in May, to study the public’s willingness to get vaccinated. We found that the Google search volume for “vaccine” was highly correlated with the number of confirmed local infections (r=0.71, P<.001). We clearly observed that a crucial factor influencing Taiwanese people’s willingness to be vaccinated is the local epidemic situation.
In another study, Google mobility reports were leveraged to see how people’s movements and gatherings changed in response to different COVID-19 alert levels and policy interventions in Taiwan. It was shown that crowds in retail sites, recreation sites, parks, transit stations, and workplaces in Taiwan declined significantly after the Taipei City and New Taipei City Level-3 alerts. Then when the Level-3 COVID-19 alert was implemented throughout Taiwan on May 15, 2021, the average number of daily trips dropped sharply, particularly in urban areas. Taipei City saw a 52% reduction in daily trips, with an average decrease of 28% for all cities. This decline in movement, both before and after strict lockdown measures, indicated that people in Taiwan chose to limit their activities and gatherings as a precaution.
Lastly, despite the emergence of the Omicron variant in early 2022, low hospitalization and death rates persisted in Taiwan, and people continued with their normal lives as seen in Google mobility reports. This suggested that the public health measures and public response in Taiwan have been successful in mitigating the impact of the Omicron variant (Tsou et al., 2024). Google Trends data served as a valuable proxy for understanding population behavior and sentiments that are not easily captured through traditional survey methods. These digital footprints helped gaining a more comprehensive understanding of the public’s response to the pandemic and the effectiveness of different policies and interventions.
1. Internet Searches for “Insomnia” and “Suicide” Mediated by Stay-at-Home Behaviors in 45 Countries during the First 12 Months of the COVID-19 Pandemic Hesitancy During the COVID-19 Outbreaks
Lin SH, Lan YT, Hsia PH, Kao CL, Tsou HH, Lin YHJournal of Affective Disorder. 2023;325:119-126.
2. Utilizing Internet Search Volume to Monitor Stages of Change in Vaccine Hesitancy During the COVID-19 Outbreaks
Lan YT, Wu SI, Lin YHFrontiers in Public Health. 2022;10:844543.
3. Efficiency and Quality of Data Collection Among Public Mental Health Surveys Conducted During the COVID-19 Pandemic: Systematic Review
Lin YH, Chen CY, Wu SI.
Journal of Medical Internet Research. 2021;23(2):e25118.Listen to the audio summery of a paper produced by Google NotebookLM.
4. Increased Internet Searches for Insomnia as an Indicator of Global Mental Health During the COVID-19 Pandemic: Multinational Longitudinal Study.
Lin YH, Chiang TW, Lin YL.
Journal of Medical Internet Research. 2020;22(9):e22181.
Listen to the audio summery of a paper produced by Google NotebookLM.
5. Google Searches for the Keywords of “Wash Hands” Predict the Speed of National Spread of COVID-19 Outbreak Among 21 Countries.
Lin YH, Liu CH, Chiu YC.
Brain, Behavior, and Immunity. 2020; 87: 30–32.Listen to the audio summery of a paper produced by Google NotebookLM.
1. Perceived threat of potential military conflicts between Taiwan and China and psychological distress among Taiwanese individuals: A population-based study.
Cheng-Fang Yen, Ray C. Hsiao, Yu-Hsuan Lin
Psychiatry and Clinical Neurosciences(2024).
2. Influences of potential military conflict between Taiwan and China on the intention to emigrate among Taiwanese individuals.
Lin, Y. H., & Yen, C. F. (2024).
台灣精神醫學, 38(3), 128-133.