Internal construct validity of the Rivermead Post-Concussion Symptoms Questionnaire

Internal construct validity of the Rivermead Post-Concussion Symptoms Questionnaire.

OBJECTIVE To investigate the internal construct validity of the Rivermead Post-Concussion Symptoms Questionnaire (RPQ) by Rasch analysis of data from a national cohort of patients with mild traumatic brain injury. METHODS Data collected at 3 months after mild traumatic brain injury from 2,523 patients were analysed using the partial credit model, describing rating scale structure, local depen...

Internal construct validity of the Shirom-Melamed Burnout Questionnaire (SMBQ)

BACKGROUND Burnout is a mental condition defined as a result of continuous and long-term stress exposure, particularly related to psychosocial factors at work. This paper seeks to examine the psychometric properties of the Shirom-Melamed Burnout Questionnaire (SMBQ) for validation of use in a clinical setting. METHODS Data from both a clinical (319) and general population (319) samples of hea...

External, Internal and Construct Validity

Introduction In research, validity refers to the degree to which findings are applicable in real-life situations. Essentially, if the findings are strongly valid, it implies that they have an excellent degree of applicability. In contrast, low validity implies that the survey is not applicable in real-life situations. The specific approach used during research has strong influence on validity. ...

Internal construct validity of the stress-energy questionnaire in a working population, a cohort study

BACKGROUND Psychosocial stress at work has been recognised as one of the most important factors behind the increase in sick leave due to stress-related mental disorders. It is therefore important to be able to measure perceived work stress in a way that is both valid and reliable. It has been suggested that the Stress-Energy Questionnaire (SEQ) could be a useful tool for measuring mood (stress ...

Response set bias, internal consistency and construct validity of the Oswestry Low Back Pain Disability Questionnaire