Psychometric properties of the Italian version of the Speech Handicap Index

Abstract

Objective

Speech impairment is common in patients affected by head and neck cancer and impact on quality of life. Therefore, specific instruments are required for its evaluation. The aim of this study is to evaluate the psychometric properties of the Italian Speech Handicap Index.

Methods

Data were obtained from 50 patients and 75 asymptomatic subjects. The study consisted of five phases: (1) item generation, (2) internal consistency and reliability analysis, (3) normative data generation, (4) validity analysis, performed by comparing the Italian Speech Handicap Index scores obtained in patients and asymptomatic subjects, and by correlating its scores with the results of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Head and Neck Module, and (5) cut-off value.

Results

Internal consistency was good (Cronbach α = 0.9) and the test–retest reliability was strong. A significant difference in Italian Speech Handicap Index total score between patients and asymptomatic subjects was found. Moderate correlations between the two questionnaires were observed. A cut-off value of 14.5 demonstrated a sensitivity of 96% and a specificity of 100%.

Conclusion

The Italian Speech Handicap Index is a reliable and valid clinical tool. Its application in everyday practice and outcome research is recommended.

IMPLICATIONS FOR REHABILITATION

• Rehabilitation of speech in head and neck cancer patients is frequently needed, especially after surgical treatment.

• Speech impairment represents one of the most essential factors influencing the quality of life in head and neck cancer patients.

• The evaluation of the speech impairment should be performed using dedicated assessment tools.

Keywords:

• Quality of life
• oral cancer
• questionnaire
• speech handicap index
• Italian

Disclosure statement

No potential conflict of interest was reported by the authors.