[Swallowing-related quality of life in oral cavity cancer. The German version of the Anderson Dysphagia Inventory].
BACKGROUND
The objective of this study was to validate the German version of the Anderson Dysphagia Inventory (ADI), as well as to grade it by using health-related quality of life as an external criterion.


METHODS
A total of 102 patients (26 women, 76 men) aged 34-90 years (61.1+/-10.8) with a treated squamous cell carcinoma of the oral cavity participated in the study. All study participants independently completed the German version of the ADI and the SF-36 questionnaire on health-related quality of life. The German ADI was tested for its validity and reliability, and subjected to a factor analysis.


RESULTS
The internal consistency reliability of the ADI was calculated using Cronbach's alpha coefficient and was equal to 0.942. In the split-half reliability the Spearman-Brown coefficient scored 0.916. Factor analysis showed a one-factor result. The correlation coefficients between the point scores of the German ADI and the following clinical parameters demonstrated construct validity: radiation (p<0.001), T-classification (p=0.002), surgical method (p=0.018), not, however, tumor site (p=0.115). The grading system was as follows: scores <55 are regarded as "definitely noticeable"; scores 55-70 are considered as "more noticeable than not"; while scores >70 are classified as " more unnoticeable than not".


CONCLUSIONS
The German translation of the ADI is a validated and reliable method to assess swallowing-related quality of life.
Bauer
F
F
Abteilung für Phoniatrie und Pädaudiologie, Universitätsklinikum Erlangen, Bohlenplatz 21, 91054 Erlangen. Bauer.Fran@gmail.com
Seiss
M
M
Grässel
E
E
Stelzle
F
F
Klotz
M
M
Rosanowski
F
F
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000523:psychology; D003680:Deglutition Disorders / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000175:diagnosis* / Q000523:psychology; D011788:Quality of Life; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires
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