Using Google Trends, we recorded relative changes in volume of searches related to dysphagia, vomiting, and diarrhea in the USA between January 2008 and January 2011.  We assessed the correlation between Google Trends and these two clinical datasets, as well as examined seasonal variation trends.



Google Trends
We queried the National Inpatient Sample (NIS) and the National Hospital Ambulatory Medical Care Survey (NHAMCS) during this time period and identified cases related to these symptoms. 
National Inpatient Sample (NIS)
We queried the National Inpatient Sample (NIS) and the National Hospital Ambulatory Medical Care Survey (NHAMCS) during this time period and identified cases related to these symptoms. 
National Hospital Ambulatory Medical Care Survey (NHAMCS)