Person-centered medicine: validation of a person perception instrument
DOI:
https://doi.org/10.32385/rpmgf.v38i3.13218Keywords:
Person-centered medicine, Cross-cultural adaptation, Validation, Questionnaire, Medical appointmentAbstract
Aims: Culturally adapt and validate for the European spoken Portuguese the Patient Perception of Patient-Centeredness (PPPC) questionnaire, created by Moira Stewart with an internal consistency of 0.80 (Cronbach’s alpha).
Methods: PPPC translation to Portuguese (PCCP), medical experts’ analysis, back-translation, and degree of readability measurement were performed. A cross-sectional multicentric observational quasi-randomised study was performed in a convenience sample of patients attending their family medicine appointments, who accepted applying the PCCP and answering sample characterization parameters such as gender, age, and academic background. Internal consistency by Cronbach’s alpha as well as the descriptive and inferential statistical analysis was performed to a threshold of significance of p<0.01.
Results: PCCP has demonstrated an acceptable internal consistency with Cronbach’s alpha=0.72, ranging from 0.691 to 0.72, being the item-total correlations between 0.32-0.65, F-test of F=32343.09, p<0.001, and reliability of ρ=0.96; p<0.001. The Flesch Reading Ease found an easy-to-read level of readability. For an n=570, 36.8% were women, 17.0% were under 35 years old and 48.9% had a six-year educational level, minimum 13 and maximum 36 points. No differences were found by gender (p=0.73), age (p=0.57), or educational level (p=0.44) for the mean score of the PCCP.
Conclusions: The PCCP questionnaire was able to be cross-culturally adapted and proved to be easy to read. It revealed an adequate internal consistency (α=0.72), though smaller than the original one (α=0.80). It is now possible to study the patient's perception of the practice of a PCM.
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