Validity and reliability of swallowing screening tools used by nurses for dysphagia: A systematic review

Abstract

Dysphagia following neurological impairment increases the risk of dehydration, malnutrition, aspiration pneumonia, and even death. Screening for dysphagia has been reported to change negative outcomes. This review evaluated the validity and reliability of measurement tools for screening dysphagia in patients with neurological disorders to identify a feasible tool that can be used by nurses. Electronic databases were searched for studies from 1992 to 2015 related to dysphagia screening measurements. The search was applied to the Pubmed, CINAHL, Cochrane, Medline, EBSCO host, and CEPS + CETD databases. A checklist was used to evaluate the psychometric quality. The tools were evaluated for their feasibility for incorporation into routine care by nurses in hospitals. A total of 104 papers were retrieved, and eight articles finally met the inclusion criteria. The sensitivity and specificity of the screening tools ranged from 29% to 100% and from 65% to 100%, respectively. The interrater reliability ranged from good to excellent agreement. On the basis of quality evaluations, all the included studies had a risk of bias because of inadequate methodological characteristics. The Standardized Swallowing Assessment is the most suitable tool for detecting dysphagia because its psychometric properties and feasibility are higher than those of other screening tools that can be administered by nurses.