Open AccessIntegrating Google Trends Search Engine Query Data Into Adult Emergency Department Volume Forecasting: Infodemiology Study
Author(s) -
Jesus Trevino,
Sanjeev Malik,
Michael Schmidt
Publication year - 2022
Publication title -
jmir infodemiology
Language(s) - English
Resource type - Journals
ISSN - 2564-1891
DOI - 10.2196/32386
Subject(s) - web search query , emergency department , baseline (sea) , medicine , computer science , health care , mean absolute error , volume (thermodynamics) , medical emergency , emergency medicine , information retrieval , data mining , mean squared error , search engine , statistics , mathematics , oceanography , physics , quantum mechanics , psychiatry , economic growth , economics , geology
Background The search for health information from web-based resources raises opportunities to inform the service operations of health care systems. Google Trends search query data have been used to study public health topics, such as seasonal influenza, suicide, and prescription drug abuse; however, there is a paucity of literature using Google Trends data to improve emergency department patient-volume forecasting. Objective We assessed the ability of Google Trends search query data to improve the performance of adult emergency department daily volume prediction models. Methods Google Trends search query data related to chief complaints and health care facilities were collected from Chicago, Illinois (July 2015 to June 2017). We calculated correlations between Google Trends search query data and emergency department daily patient volumes from a tertiary care adult hospital in Chicago. A baseline multiple linear regression model of emergency department daily volume with traditional predictors was augmented with Google Trends search query data; model performance was measured using mean absolute error and mean absolute percentage error. Results There were substantial correlations between emergency department daily volume and Google Trends “hospital” (r=0.54), combined terms (r=0.50), and “Northwestern Memorial Hospital” (r=0.34) search query data. The final Google Trends data–augmented model included the predictors Combined 3-day moving average and Hospital 3-day moving average and performed better (mean absolute percentage error 6.42%) than the final baseline model (mean absolute percentage error 6.67%)—an improvement of 3.1%. Conclusions The incorporation of Google Trends search query data into an adult tertiary care hospital emergency department daily volume prediction model modestly improved model performance. Further development of advanced models with comprehensive search query terms and complementary data sources may improve prediction performance and could be an avenue for further research.