Figure 2.

Average valence of respondents' general essay comments. The mean valence of respondent comments when asked their general reactions to the public health essay by audience segment and by a national population estimate. Note: 1 = (entirely positive comments); 0 = (mixed, including both positive and negative comments); and -1 = (entirely negative comments).

Maibach et al. BMC Public Health 2010 10:299   doi:10.1186/1471-2458-10-299
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