Typically, when using existing scales, researchers conduct a confirmatory factor analysis and estimate reliability indices such as Cronbach alpha. Results are then used to select items that are subsequently incorporated in models. However, this process is inefficient as results from several studies consistently indicate that certain factors have low factor loadings. This study addressed this is...

Mammography screening has been demonstrated to decrease mortality from breast cancer. Although adherence rates have increased, there is still a need to increase annual screening. Self-efficacy is a construct that has been found useful in predicting behaviors. Measurement of self-efficacy needs to be specific to the behavior and to have good validity and reliability. The purpose of this study is...

BACKGROUND AND OBJECTIVES Currently available tools to measure teamwork, an essential component of primary care, are generally very resource intensive and thus cannot be administered frequently. To explore the possibility of developing a brief teamwork-assessment instrument, we first administered 29 questions about teamwork from the Practice Environment Checklist (PEC) to all members of six cli...

PURPOSE Teaching evaluation tools can be used to provide feedback to medical educators and help them improve their teaching skills. The purpose of this study was to develop a clinical teaching evaluation tool and test its efficacy. METHODS The draft tool was developed based on clinical education literature and was modified by the stakeholder groups. To examine the quality of the instrument, c...

OBJECTIVE To examine the validity and reliability of Theory of Planned Behavior (TPB) scales for healthful eating for persons at risk for diabetes. DESIGN Cross-sectional, using a self-administered questionnaire. SETTING Community in the Midwest. PARTICIPANTS 106 adults who self-identified based on one or more American Diabetes Association diabetes risks. VARIABLES MEASURED Behavioral, ...

OBJECTIVE To determine the validity and reliability of a nutrition knowledge questionnaire for adults in California. METHODS A convenience sample of adults was recruited for cognitive interviews. A mail-based survey of 400 randomly selected addresses was used to assess internal consistency (Cronbach α). Researchers assessed content validity (Student t test) and test-retest reliability (Pearso...

UNLABELLED Examinations at the Faculty of Medicine of Mu'tah University are based on a single best answer multiple-choice questions (MCQs) format. However, the reliability of this examination format has not been determined. OBJECTIVE Using an examination of obstetrics and gynaecology as a model, this study aims to analyze the difficulty (facility) index, the discriminatory power and reliabili...

OBJECTIVE The American Diabetes Association advocates insulin regimens for youth with type 1 diabetes that involve adjusting insulin dose based on carbohydrate intake and blood glucose level. Implementing these regimens requires knowledge about carbohydrate content of foods and subsequent calculations of insulin dose, skills that may be difficult to gauge in practice. Therefore, we sought to de...

OBJECTIVE To examine reliability of validity-tested instruments measuring fruit and vegetable (FV) preference and self-efficacy (SE) for and attitude (AT) toward cooking. METHODS In Santa Fe, New Mexico, following cognitive interviews with 123 fourth- and fifth-graders, surveys were administered twice, less than 2 weeks apart, to students in 16 classrooms without intervening nutrition educati...