Further validation of the 5-item Perceived Efficacy in Patient–Physician Interactions (PEPPI-5) scale in patients with osteoarthritis

• Published in: Patient education and counseling Vol. 87; no. 1; pp. 125 - 130
• Main Authors: ten Klooster, Peter M, Oostveen, Johanna C.M, Zandbelt, Linda C, Taal, Erik, Drossaert, Constance H.C, Harmsen, Etelka J, van de Laar, Mart A.F.J
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ireland Ltd 01.04.2012; Elsevier
• Subjects: Aged; Aged, 80 and over; Assessment; Biological and medical sciences; Cross-Sectional Studies; Efficacy; Factor Analysis, Statistical; Female; Health; Humans; Internal Medicine; Language; Male; Medical sciences; Middle Aged; Miscellaneous; Netherlands; Nursing; Osteoarthritis; Osteoarthritis - psychology; Patient–physician communication; Perception; Physician-Patient Relations; Psychological Tests - statistics & numerical data; Psychometrics - statistics & numerical data; Public health. Hygiene; Public health. Hygiene-occupational medicine; Reproducibility of Results; Self Efficacy; Selfefficacy; Social support; Surveys and Questionnaires; Test-Retest reliability; Validation; Netherlands; Europe; Validation; Patient–physician communication; Assessment; Self-efficacy; Evaluation; Selfcare; Scale (size); Efficiency; Measurement technique; Know how; Bone disease; Health staff patient relation; Communication; Quality of life
• ISSN: 0738-3991; 1873-5134
• DOI: 10.1016/j.pec.2011.07.017

Abstract Objective To examine the structural validity, internal consistency, test–retest reliability, and construct validity of the 5-item Perceived Efficacy in Patient–Physician Interactions (PEPPI-5) scale in patients with osteoarthritis (OA). Methods A cross-sectional sample of 224 outpatients with OA completed a survey containing the Dutch PEPPI-5 and other standardized measures assessing perceived health-management skills, general self-efficacy, social support, and health-related quality of life. A subsample of 100 patients completed the PEPPI-5 again approximately 3 weeks later. Results Confirmatory factor analysis demonstrated good fit for a unidimensional model of the PEPPI-5. Additionally, the scale showed high internal consistency ( α = 0.92) and fair test–retest reliability (ICC = 0.68). As hypothesized, the PEPPI-5 was strongly correlated with perceived health-management skills, moderately with social support and psychosocial aspects of health, and not with physical aspects of health. Contrary to expectations, however, it was not correlated with general self-efficacy. Conclusion The Dutch PEPPI-5 demonstrated adequate validity and reliability in patients with OA. Practice implications The PEPPI-5 is a brief and appropriate tool for measuring self-efficacy of patients with OA to interact with their physicians. Additional research into its sensitivity to change is needed before it can be confidently recommended as an outcome measure in intervention studies.