Figure 2: Proportional measures of the frequency that the phrase “anesthesia safety” (left panel) and “anesthesia side effects” (right panel) were searched from 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 (y-axis). In contrast to the observed decrease in web interest in the phrase anesthesia safety (left panel) the search phrase anesthesia side effects is trending up over the same time period (right panel). Results are screen shots from the authors’ computer using Google Insights for Search (http://www.; accessed: April 30, 2011).