BACKGROUND The QUALIDEM is a dementia-specific Quality of life (Qol) instrument that is recommended for longitudinal studies and advanced stages of dementia. Our study aimed to develop a user guide for the German version of the QUALIDEM and to determine the item distribution, internal consistency and inter-rater reliability (IRR) of the German QUALIDEM. METHODS A user guide was developed base...

BACKGROUND Reporting of the clinical significance of observed changes is recommended when publishing mental health treatment outcome studies and is increasingly used in routine outcomes monitoring systems. Since recovery rates vary with the method chosen, we investigated the validity of classifications of clinically significant change when the Jacobson-Truax method and the Hageman-Arrindell met...

N independent sources choose their provider depending on the perceived costs associated with each provider. The perceived cost is the sum of the price and quality of service proposed by the provider coefficiented by the source sensitivity to the quality of service. The source chooses the smallest cost provider or refuses to subscribe if all the perceived costs are above her maximum admissible o...

BACKGROUND The oral health-related quality of life indicators are increasingly used to measure the impact of the oral conditions on quality of life. One of the most used indicators is the Oral Health Impact Profile (OHIP-14), but it has never been applied in Iran. The aim of this study was to validate the usage of OHIP-14 among Iranians. METHODS A cross-sectional study was performed in Kerman...

BACKGROUND The Forgotten Joint Score (FJS) is a newly developed health-related quality of life (HRQoL) questionnaire designed to evaluate the awareness after total knee arthroplasty (TKA). This study cross-culturally adapted and psychometrically validated a simplified Chinese version of the FJS (SC-FJS). METHODS Cross-cultural adaptation was performed according to the internationally recogniz...