Correlation of the Neck Disability Index (NDI) and Voice Handicap Index (VHI) in Neck Pain Patients and Patients With Voice Disorders
Correlation of the Neck Disability Index (NDI) and Voice Handicap Index (VHI) in Neck Pain Patients and Patients With Voice Disorders
This study investigates in patients whose primary complaint is either neck pain and/or a
 voice disorder , if there are any correlations between subjective neck and voice symptoms
 according to Neck Disability Index (NDI) and Voice Handicap Index (VHI). NDI and VHI
 questionnaire results for voice disordered patients will be retrieved from the data base of
 the Department of Phoniatrics and Speech Pathology, University Hospital Zurich. Neck pain
 patient questionnaire data will be retrieved from an ongoing study. The agreement between
 subjective neck handicap (NDI) and voice handicap (VHI) will be statistically analysed.
Inclusion Criteria:

 -  18 years old

 -  primary diagnose of a functional disorder of the muscular structure in the neck area

 -  primary diagnose of a functional or secondary structural voice disorder

 Exclusion Criteria:

 -  systemic illness of the motion apparatus (i.e., polyarthritis rheumatica)

 -  acute cancer

 -  neurogenic voice and swallow disorder

 -  Intubation within the last 18 months

 -  lack of german knowledge, (not able to fill out a questionnaire independently)