Inter-device reliability of DSI measurement.
The Dysphonia Severity Index (DSI) is a measure that quantifies the overall vocal quality. The aim of the study is to evaluate the reliability of DSI measurements. The DSIs of 30 subjects were therefore measured using LingWAVES (WEVOSYS) and DiVAS (XION). To evaluate the inter-device reliability of DSI measurement, the devices' results were compared for each subject. The DSI values of both devices showed great differences. The calculated DSI differences of 95% of the subjects were within the limits of +2.39 and -2.82, which makes a clinical interpretation of severity of voice disorder using different devices questionable. The technical and procedural aspects of measurement divergences are discussed, and the need to define hardware and software standards is shown.
Department of Otorhinolaryngology, Division of Phoniatrics-Logopedics, Medical University of Vienna, Vienna, Austria. philipp.aichinger@meduniwien.ac.at
Philipp
P
Aichinger
Felicitas
F
Feichter
Birgitta
B
Aichstill
Wolfgang
W
Bigenzahn
Berit
B
Schneider-Stickler
D000328:Adult; D000465:Algorithms; D004185:Disability Evaluation; D055154:Dysphonia / Q000175:diagnosis* / Q000503:physiopathology; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D010699:Phonation; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D012815:Signal Processing, Computer-Assisted; D012984:Software; D013061:Speech Acoustics; D013068:Speech Production Measurement / Q000295:instrumentation*; D014159:Transducers; D014833:Voice Quality; D055815:Young Adult