Figure 5: Proportional measures of frequency of entries of the search term “preanesthesia” compared to the search phrase “before anesthesia” by online users at the main google search page (www.google.com) 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. Google users tend to use the more conversational phrase “before anesthesia” rather than a more common hospital term “preanesthesia”. Results are screen shots from the authors’ computer using Google Insights for Search (http://www.google.com/ insights/search/#; accessed: April 30, 2011).