Audiology and hearing health professionals in developed and developing countries (2002), Lyn et al. (1998), and Swart et al. (1995), impacted cerumen is one of the most common ear diseases and causes of hearing loss, with prevalence rate between 7.4% and 63%. Additionally, otoscopy does not require a great deal of expertise beyond basic training and is useful to refer a child when the tympanic membrane cannot be visualized due to occlusion of the external auditory meatus by cerumen. Pure-tone audiometry screening, in which there is typically no attempt to find threshold, has been found to accurately assess hearing status in children six years and older, when trained health workers
Substance abuse Substance abuse can be another contributing factor that affects physical and mental health of veterans. Substance abuse may also damage personal relationships families and lead to financial difficulty. There is evidence to suggest that substance abuse disproportionately affects the homeless veteran population. A 2015 Florida study compared causes of homelessness between veterans and non veteran populations in a self reporting questionnaire. The results from the study found that 17.8% of the homeless veteran participants attributed their homelessness to alcohol and drug related problems compared to just 3.7% of the non-veteran homeless group. A 2003 study found that homelessness was associated