“…A survey study by Holland et al (2011) of healthy community-dwelling older adults found that 11.4% showed symptoms of swallowing difficulties. Turley and Cohen (2009) studied 248 retired older adults and found that 13.7% had impaired swallowing; 11Y22% of stroke patients catch pneumonia during their acute or rehabilitative phases (Indredavik, Rohweder, Naalsund, & Lydersen, 2008); 21Y42% of stroke patients in the acute stage show impaired swallowing, with 2Y25% diagnosed with asymptomatic aspiration pneumonia (Ramsey, Smithard, & Kalra, 2005); and 50% of acute stroke patients experience dysphagia during the immediate post-stroke period (Martino et al, 2005;Paciaroni et al, 2004). Wang, Chen, Lien, and Hwang (2001) diagnosed 12.8% of elderly people with impaired swallowing using a videofluoroscopic test (VFS) administered during regular health checkups.…”