Cronbach's a is the most widely used index of the reliability of a scale. However, its use and interpretation can be subject to a number of errors. This article discusses the historical development of a from other indexes of internal consistency (split-half reliability and Kuder-Richardson 20) and discusses four myths associated with a: (a) that it is a fixed property of the scale, (b) that it ...

BACKGROUND To be able to design effective strategies to improve healthcare professionals' implementation behaviors, a valid and reliable questionnaire is needed to assess potential implementation determinants. The present study describes the development of the Determinants of Implementation Behavior Questionnaire (DIBQ) and investigates the reliability and validity of this Theoretical Domains F...

BACKGROUND/AIMS To assess reliability and validity of the QUOTE-cataract, a questionnaire that measures the quality of care from the perspective of cataract patients. METHODS The QUOTE-cataract was tested in a multicentre study among 540 cataract patients in three different hospitals. Reliability was represented by internal consistency (Cronbach's alpha), and repeatability (intraclass correla...

OBJECTIVE To translate the Bath Ankylosing Spondylitis Functional Index (BASFI) into Greek, and validate its psychometric properties for the Greek patient population. Also, to assess the degree to which questions in the scale did address common themes, using confirmatory factor analysis. METHODS BASFI has been translated into Greek (BASFI-GrV), applied to 61 patients with ankylosing spondylit...

UNLABELLED BACKGROUND The current healthcare climate is characterized by a constant battle for the provision of quality care with limited resources and with patient satisfaction receiving increased attention, there is a need for reliable and valid assessment measures. This study describes the adaptation, testing and validation of the Risser Patient satisfaction Scale in an oncology care sett...

In Italy, the role of a nurse in cancer research is beginning to develop, but instruments developed to delineate the dimensions of the Italian clinical trials nursing role are lacking. This study aimed to translate into Italian the Clinical Trials Nursing Questionnaire (CTNQ) and assess its content validity, internal consistency, and stability reliability. Forward-backward translation and revie...

To validate the English version of the Spielberger State-Trait Anxiety Inventory (STAI) in a sample of Malaysia patients with and without urinary symptoms. Validity and reliability were studied in patients with lower urinary tract symptoms (LUTS) and patients without LUTS. Reliability was evaluated using the test-retest method and internal consistency was assessed using Cronbach's alpha. Sensit...

Determination of psychometric indices the Polish language version Student Satisfaction and Self Confidence in Learning Scale (SSCL). The validity research conducted is significant, scale SSCL will be first tool Poland, thanks to which possibility created monitor didactic process high-fidelity simulation method used. Construct was tested using following Confirmatory Factor Analysis (CFA fit inde...