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 ( 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 ( insights/search/#; accessed: April 30, 2011).