Perceived Usefulness Drives the Use of Traditional, Complementary, and Integrative Medicine: A Systematic Umbrella Review.

Introduction: The use of traditional, complementary, and integrative medicine (TCIM) has grown rapidly worldwide. The aim of this umbrella review is to provide a comprehensive synthesis of the available evidence on factors associated with TCIM use to identify the most influential factor driving the use of TCIM. This review was guided by the following research question: What is the most influential factor driving TCIM use? Methods: This review was conducted in accordance with PRISMA guidelines. International literature was systematically searched using PubMed, Embase, and manual searching of reference lists. The search was limited to peer-reviewed systematic literature reviews published between January 2005 to March 2024, in Arabic and English languages, and reported empirical research findings on factors associated with TCIM use. Results: A total of 62 review articles were included. The following five prominent factors were identified and critically analyzed: Socioeconomic status; dissatisfaction with conventional medicine; internal locus of control; being holistic, natural, and safe; and perceived usefulness. Of these, perceived usefulness, defined as the perceived benefits of a TCIM modality in meeting specific health needs or goals, was the most influential factor driving TCIM use. Discussion: The findings of this umbrella review revealed that individuals would not use a specific type of TCIM unless they perceived some benefit from its use, even if the benefit lacked supporting scientific evidence. This insight provides a foundation for researchers, health practitioners, and policymakers to advance TCIM research, clinical practice, and policy by targeting its perceived benefits. Focusing on perceived benefits can help researchers prioritize areas that are most valued by patients, leading to more impactful studies and evidence-based recommendations for practice. Understanding perceived benefits can also lead to more informed discussions between patients and health practitioners, creating a more collaborative and culturally sensitive health care environment. Furthermore, addressing perceived benefits can guide regulations to ensure the safe, effective, and ethical use of TCIM practices, leading to more effective integration of TCIM into conventional medicine as the evidence of its usefulness accumulates.