Assessing the comfort of earplugs: development and validation of the French version of the COPROD questionnaire

Earplugs are a common form of protection for workers exposed to hazardous noise levels. Their comfort directly impacts the effective by influencing their consistent and correct use. Nevertheless, definition may vary according studies. Thus, previous review literature has shown that improve our understanding perceived reduce measurement variability, it is advisable consider through multidimensional construct (physical, acoustical, functional psychological). On this basis, COPROD questionnaire was developed. It intended people working in noisy environments. Nine earplug models were evaluated 118 participants over six-week period. This paper presents successive analyses used validate structure confirm relevance proposed dimensions addressed items. First results suggest preference custom molded earplugs. Practitioner summary: conditions hearing users. As can between studies, developed jointly evaluate all its dimensions. earplugs during six weeks. validation process questionnaire.