  Over two hundreds health awareness events take place in the United States in
order to raise attention and educate the public about diseases. It would be
informative and instructive for the organization to know the impact of these
events, although such information could be difficult to measure. Here 46 events
are selected and their data from 2004 to 2017 are downloaded from Google
Trend(GT). We investigate whether the events effectively attract the public
attention by increasing the search frequencies of certain keywords which we
call queries. Three statistical methods including Transfer Function Noise
modeling, Wilcoxon Rank Sum test, and Binomial inference are conducted on 46 GT
data sets. Our study show that 10 health awareness events are effective with
evidence of a significant increase in search frequencies in the event months,
and 28 events are ineffective, with the rest being classified as unclear.
