Protocol for a validation study of the translated stapesplasty outcome test 25 for measurement of disease-specific quality of life in Dutch patients with otosclerosis

The effect of piston diameter in primary stapes surgery on surgical success

PURPOSE

To evaluate the effect of piston diameter in patients undergoing primary stapes surgery on audiometric results and postoperative complications.

METHODS

A retrospective single-center cohort study was performed. Adult patients who underwent primary stapes surgery between January 2013 and April 2022 and received a 0.4-mm-diameter piston or a 0.6-mm-diameter piston were included. The primary and secondary outcomes were pre- and postoperative pure-tone audiometry, pre- and postoperative speech audiometry, postoperative complications, intraoperative anatomical difficulties, and the need for revision stapes surgery. The pure-tone audiometry included air conduction, bone conduction, and air-bone gap averaged over 0.5, 1, 2 and 3 kHz.

RESULTS

In total, 280 otosclerosis patients who underwent 321 primary stapes surgeries were included. The audiometric outcomes were significantly better in the 0.6 mm group compared to the 0.4 mm group in terms of gain in air conduction (median = 24 and 20 dB, respectively), postoperative air-bone gap (median = 7.5 and 9.4 dB, respectively), gain in air-bone gap (median = 20.0 and 18.1 dB, respectively), air-bone gap closure to 10 dB or less (75% and 59%, respectively) and 100% speech reception (median = 75 and 80 dB, respectively). We found no statistically significant difference in postoperative dizziness, postoperative complications and the need for revision stapes surgery between the 0.4 and 0.6 mm group. The incidence of anatomical difficulties was higher in the 0.4 mm group.

CONCLUSION

The use of a 0.6-mm-diameter piston during stapes surgery seems to provide better audiometric results compared to a 0.4-mm-diameter piston, and should be the preferred piston size in otosclerosis surgery. We found no statistically significant difference in postoperative complications between the 0.4- and 0.6-mm-diameter piston. Based on the results, we recommend always using a 0.6-mm-diameter piston during primary stapes surgery unless anatomical difficulties do not allow it.

French adaptation and validation of the Stapesplasty Outcome Test (SPOT-25), following COSMIN guidelines

AIMS

Otosclerosis can severely impact quality of life, but no questionnaire is available in French. The present study aimed to adapt and validate a French version of the SPOT-25.

MATERIALS AND METHODS

A controlled prospective study was conducted between September 2021 and April 2022. The translation used the "forward-backward" technique and statistical validation was performed in non-operated adult otosclerosis patients (cases) and a control group. Assessment Internal consistency, discrimination performance and test-retest reliability were assessed on global score, subscores and items.

RESULTS

Fifty-one cases and 58 control subjects filled out the test questionnaire and 35 of the 51 cases, also filled out the retest. Internal consistency on Cronbach alpha was 0.95 for the cases. Median total SPOT-25 score was 44 (range, 10-78) for cases and 2 (range, 0-33) for controls (p= P<0.0001). Test-retest reliability on intraclass correlation coefficient was excellent (ICC=0.92; [95% CI, 0.84-0.96]). Individual items all showed satisfactory performance.

CONCLUSION

The French version of SPOT-25 was short and easy to use, with satisfactory performance in assessing quality of life in otosclerosis patients.

Cross-Cultural Adaptation and Validation of the Greek SPOT-25 Quality of Life Questionnaire in Patients with Otosclerosis

Objective: To translate, adapt and validate in Greek the stapesplasty outcome test (SPOT)-25 quality of life questionnaire for patients with otosclerosis. Materials and methods:SPOT-25 was translated to Greek and completed by otosclerosis patients on the day of diagnosis, the day before surgery and three months postoperatively. Fifty controls without any otological history, symptom or finding also completed the questionnaire. Pure-tone average was obtained both preoperatively and three months postoperatively. Results:Test-retest evaluation on 56 patients was accepted. The Greek-SPOT-25 had an excellent internal consistency. All its items and subscales were significantly correlated between test and retest evaluation. Controls had significant lower SPOT-25 scores, and the postoperative scores were significantly lower than preoperative ones. Pure-tone average of four frequencies (PTA4) was significantly correlated to preoperative SPOT-25 total and subscales scores (P<0.001) before surgery and significantly correlated only with the "hearing function" subscale (p<0.05) postoperatively.

Understanding the Cost-Effectiveness of Hearing Aids and Surgery for the Treatment of Otosclerosis

Purpose of Review

To summarize and critically review recent literature on the relative cost-effectiveness of hearing augmentation versus stapes surgery for the treatment of otosclerosis.

Recent Findings

Otosclerosis leads to reduced patient quality of life, which can be ameliorated by either stapes surgery, or hearing aid usage. The success of stapes surgery is high, and the risks of serious postoperative complications are low. Hearing aids don’t have the complications of surgery but are associated with long-term costs. Cost-effectiveness models have shown that stapes surgery is a cost-effective method for treating otosclerosis.

Summary

Both stapes surgery and hearing aids can improve patient-reported quality of life in otosclerosis. Stapes surgery has larger upfront costs and surgical risks, but hearing aids are associated with longer lifetime costs. Stapes surgery is cost-effective for the treatment of otosclerosis.

Validity and Test-Retest Reliability of the translated Stapesplasty Outcome Test 25 for Measurement of Disease-Specific Quality of Life in Patients with Otosclerosis

OBJECTIVES

To assess the validity and test-retest reliability of the Danish Stapesplasty Outcome Test 25 (SPOT-25) version.

MATERIALS AND METHODS

The German SPOT-25 questionnaire-consisting of 25 questions within the subscores "hearing function," "tinnitus," "mental condition," "social restrictions," and "general quality of life," found to be significant in terms of health-related quality of life in patients with otosclerosis-was translated into Danish in a three-step process according to the guidelines provided by the International Collegium of Rehabilitative Audiology. In total, 35 patients with otosclerosis were included as cases and 35 individuals without ear-problems as controls. The SPOT-25 questionnaire was filled out once by the patients and twice by the controls. Pure tone average (0.5, 1, 2, and 3 kHz) (PTA4) was obtained for cases.

RESULTS

The SPOT-25 clearly discriminated the individuals with otosclerosis from con-trols within all subscores (p<0.001). The internal consistency within the subscores was good to excellent with Cronbach alpha values of 0.85-0.95. The reproducibility (estimated by the control group) was moderate to high, with an intraclass correlation of 0.58-0.94 within the subscores. Although the SPOT-25 subscores within "hearing" and "social restrictions" showed a moderate correlation with PTA4 (Pearson correlation coefficient 0.51 and 0.42, respectively), this was not the case for the subscores regarding "tinnitus," "mental condition," and the "general."

CONCLUSION

The SPOT-25 questionnaire can be used as a valuable complement to audiometric data in patients with otosclerosis, especially for estimating factors such as tinnitus and "mental condition," which do not correlate with the audiometric data.