Objectives To compare the construct validity, including discrimination between known groups, of three pain and three morning stiffness (MS) measurement instruments. Methods Patients with radiographic ...

Objectives The Disease Activity index for Psoriatic Arthritis (DAPSA) was developed to assess disease activity in patients with psoriatic arthritis (PsA). A modified version, DAPSA28, uses 28 joints ...

Introduction: The Post-COVID-19 Functional Status (PCFS) scale was quickly adopted into COVID-19 research and clinical practice worldwide to monitor functional status and recovery. The scale has been ...

Centro Centroamericano de Población y Escuela de Estadística, Universidad de Costa Rica, San José, Costa Rica Background: It is known that the effects of stress on the body harm health and mortality ...

Measures of psychological constructs are validated by testing whether they relate to measures of other constructs as specified by theory. Each test of relations between measures reflects on the ...

Background: Disease-specific Quality Of Life (QOL) measures are devised to assess the impact of a specific disease across a spectrum of important domains of life. The purpose of this study was to ...

Not revised: This Reviewed Preprint includes the authors’ original preprint (without revision), an eLife assessment, and public reviews. The paper proposes that the placement of criteria for ...

Introduction: Adverse epidermal growth factor receptor (EGFR) dermatological events affect many patients and can impair the patient’s quality of life (QoL), leading to dose reduction or ...