Validating the Penn Acoustic Neuroma Quality Of Life Scale in a sample of Dutch patients recently diagnosed with vestibular schwannoma.

OBJECTIVE: To examine the validity of the Penn Acoustic Neuroma Quality-of-Life Scale (PANQOL) in a sample of Dutch patients recently diagnosed with vestibular schwannoma. STUDY DESIGN AND
SETTING: Cross-sectional study in a university tertiary referral center.
METHODS: Between April 2011 and March 2012 consecutive patients (mean age, 56.4; range, 17-85 yr) diagnosed with vestibular schwannoma (n = 155) were included. The PANQOL was translated into Dutch according to the accepted rules of forward-backward translation. Quality of life at diagnosis was measured with the generic SF-36 and the disease-specific PANQOL. Factor analysis was used to explore the factor structure of the PANQOL. The scores of the patients in the current study were compared with those of patients from the United States of America. Correlations between SF-36 and PANQOL were examined to study psychometric characteristics of the PANQOL.
RESULTS: One hundred nineteen patients (76.8%) completed the questionnaires. SF-36 scores are comparable to previously published studies measuring Quality of Life at diagnosis. Factor analysis on our data has confirmed the original 7-dimensional structure of the PANQOL. The PANQOL scores from the Dutch and the USA patients are comparable. Correlations between PANQOL and SF-36 dimensions corroborate the validity of the Dutch PANQOL version.
CONCLUSION: Vestibular schwannoma patients experience a reduced quality of life immediately after the diagnostic process. The PANQOL seems to be a valid disease-specific measure of quality of life in Dutch patients who have recently been diagnosed with vestibular schwannoma.