After one week, the participants were asked to complete the questionnaires again. In step three, 235 questionnaires were distributed to 133 participants to estimate the construct validity of the upper jaw and the lower jaw questionnaires. At the end of step two, the final form of the questionnaires was reached. The expert panel confirmed the form and the type of questionnaires’ adjustments before a new round of interviews began. At the end of every round, the results of the interviews were discussed with an expert panel. There were 15, 13, and 15 participants per round, respectively. In step two, the face validity of the pilot questionnaires was tested through three rounds of interviews. In step one, the instruments were translated from tested German instruments to develop the pilot questionnaires. This study aimed to evaluate the validity and reliability of new instruments in the Arabic language that measure patient satisfaction with all types of removable dentures.Ī three-step methodology was used to translate and test the instruments. The psychometric properties of self-administered instruments for measuring patient satisfaction with removable dentures should be tested before inviting patients to express their opinions.
