Asthma is increasing becoming a national concern in the United States due to its economic and health impacts. In 2010, about 25 million of the population in the USA suffered from Asthma (CDC, 2014). This translates to about 10 percent of the entire population. In 2009, asthma killed nine people on average each day. The USA spends $ 56 billion in treating asthma each year (CDC, 2014). It should be appreciated that asthma is incurable. However, if managed and treated properly, a person with Asthma can live normally. This paper seeks to critique a study by McClelland et al. on Asthma. ...