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Correlation between National Influenza Surveillance Data and Google Trends in South Korea
BACKGROUND: In South Korea, there is currently no syndromic surveillance system using internet search data, including Google Flu Trends. The purpose of this study was to investigate the correlation between national influenza surveillance data and Google Trends in South Korea. METHODS: Our study was...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3855287/ https://www.ncbi.nlm.nih.gov/pubmed/24339927 http://dx.doi.org/10.1371/journal.pone.0081422 |
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author | Cho, Sungjin Sohn, Chang Hwan Jo, Min Woo Shin, Soo-Yong Lee, Jae Ho Ryoo, Seoung Mok Kim, Won Young Seo, Dong-Woo |
author_facet | Cho, Sungjin Sohn, Chang Hwan Jo, Min Woo Shin, Soo-Yong Lee, Jae Ho Ryoo, Seoung Mok Kim, Won Young Seo, Dong-Woo |
author_sort | Cho, Sungjin |
collection | PubMed |
description | BACKGROUND: In South Korea, there is currently no syndromic surveillance system using internet search data, including Google Flu Trends. The purpose of this study was to investigate the correlation between national influenza surveillance data and Google Trends in South Korea. METHODS: Our study was based on a publicly available search engine database, Google Trends, using 12 influenza-related queries, from September 9, 2007 to September 8, 2012. National surveillance data were obtained from the Korea Centers for Disease Control and Prevention (KCDC) influenza-like illness (ILI) and virologic surveillance system. Pearson's correlation coefficients were calculated to compare the national surveillance and the Google Trends data for the overall period and for 5 influenza seasons. RESULTS: The correlation coefficient between the KCDC ILI and virologic surveillance data was 0.72 (p<0.05). The highest correlation was between the Google Trends query of H1N1 and the ILI data, with a correlation coefficient of 0.53 (p<0.05), for the overall study period. When compared with the KCDC virologic data, the Google Trends query of bird flu had the highest correlation with a correlation coefficient of 0.93 (p<0.05) in the 2010-11 season. The following queries showed a statistically significant correlation coefficient compared with ILI data for three consecutive seasons: Tamiflu (r = 0.59, 0.86, 0.90, p<0.05), new flu (r = 0.64, 0.43, 0.70, p<0.05) and flu (r = 0.68, 0.43, 0.77, p<0.05). CONCLUSIONS: In our study, we found that the Google Trends for certain queries using the survey on influenza correlated with national surveillance data in South Korea. The results of this study showed that Google Trends in the Korean language can be used as complementary data for influenza surveillance but was insufficient for the use of predictive models, such as Google Flu Trends. |
format | Online Article Text |
id | pubmed-3855287 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-38552872013-12-11 Correlation between National Influenza Surveillance Data and Google Trends in South Korea Cho, Sungjin Sohn, Chang Hwan Jo, Min Woo Shin, Soo-Yong Lee, Jae Ho Ryoo, Seoung Mok Kim, Won Young Seo, Dong-Woo PLoS One Research Article BACKGROUND: In South Korea, there is currently no syndromic surveillance system using internet search data, including Google Flu Trends. The purpose of this study was to investigate the correlation between national influenza surveillance data and Google Trends in South Korea. METHODS: Our study was based on a publicly available search engine database, Google Trends, using 12 influenza-related queries, from September 9, 2007 to September 8, 2012. National surveillance data were obtained from the Korea Centers for Disease Control and Prevention (KCDC) influenza-like illness (ILI) and virologic surveillance system. Pearson's correlation coefficients were calculated to compare the national surveillance and the Google Trends data for the overall period and for 5 influenza seasons. RESULTS: The correlation coefficient between the KCDC ILI and virologic surveillance data was 0.72 (p<0.05). The highest correlation was between the Google Trends query of H1N1 and the ILI data, with a correlation coefficient of 0.53 (p<0.05), for the overall study period. When compared with the KCDC virologic data, the Google Trends query of bird flu had the highest correlation with a correlation coefficient of 0.93 (p<0.05) in the 2010-11 season. The following queries showed a statistically significant correlation coefficient compared with ILI data for three consecutive seasons: Tamiflu (r = 0.59, 0.86, 0.90, p<0.05), new flu (r = 0.64, 0.43, 0.70, p<0.05) and flu (r = 0.68, 0.43, 0.77, p<0.05). CONCLUSIONS: In our study, we found that the Google Trends for certain queries using the survey on influenza correlated with national surveillance data in South Korea. The results of this study showed that Google Trends in the Korean language can be used as complementary data for influenza surveillance but was insufficient for the use of predictive models, such as Google Flu Trends. Public Library of Science 2013-12-05 /pmc/articles/PMC3855287/ /pubmed/24339927 http://dx.doi.org/10.1371/journal.pone.0081422 Text en © 2013 Cho et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Cho, Sungjin Sohn, Chang Hwan Jo, Min Woo Shin, Soo-Yong Lee, Jae Ho Ryoo, Seoung Mok Kim, Won Young Seo, Dong-Woo Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title | Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title_full | Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title_fullStr | Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title_full_unstemmed | Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title_short | Correlation between National Influenza Surveillance Data and Google Trends in South Korea |
title_sort | correlation between national influenza surveillance data and google trends in south korea |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3855287/ https://www.ncbi.nlm.nih.gov/pubmed/24339927 http://dx.doi.org/10.1371/journal.pone.0081422 |
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