Figure 3: Proportional measures of frequency of entries of the search terms “anesthesia” compared to “surgery” by online users at the main google search page ( over the time period 2004 – 2010 (x-axis). Each measured time point is expressed as a normalized percentage of the maximum search frequency for all phrases. The term “surgery” has consistently been searched with greater frequency than anesthesia. Results are screen shots from the authors’ computer using Google Insights for Search (; accessed April 30, 2011).