Introduction

The qualitative systematic review constitutes a comprehensive and analytical process aimed at synthesizing qualitative data from individual research studies. In contrast to quantitative methods, which seek to aggregate and statistically analyze results, the qualitative approach focuses on interpretation and a deeper understanding of a phenomenon. Through this process, researchers aim to present a unified interpretative picture of issues that cannot be explained solely through numerical data, approaching human experience with greater sensitivity and depth.

Definition and Purpose of the Qualitative Systematic Review

The qualitative systematic review is a process of integrating or comparing findings from qualitative studies, with the goal of creating new knowledge, theory, or interpretative frameworks. It seeks to identify common themes, patterns, or constructs that emerge across different studies, synthesizing the findings into a broader framework of understanding. Its purpose is not to add or sum up results but to interpret and reformulate knowledge in a way that enhances comprehension of the studied phenomenon. Within this context, the qualitative systematic review focuses on developing interpretative models rather than producing statistical conclusions, attempting to answer the “how” and “why” of social phenomena. It emphasizes participants’ experiences, perceptions, and attitudes, offering a more human-centered perspective on scientific inquiry.

Methodological Characteristics

The qualitative systematic review follows specific stages that ensure transparency, validity, and reliability throughout the process. Initially, the researcher defines the research question and identifies relevant studies based on predetermined inclusion and exclusion criteria. Next, the extraction of data, coding of themes, and comparative analysis of findings take place. This procedure allows the identification of recurring patterns, differences, or even contradictions among studies. In the synthesis stage, methods such as thematic analysis, narrative synthesis, or interpretative meta-synthesis are commonly applied, depending on the type of data and the theoretical framework of the research. The aim is to create a new, more comprehensive understanding of the phenomenon through the comparison and conceptual organization of qualitative findings.

Fields of Application

Qualitative systematic reviews are applied in various scientific disciplines, including the social and human sciences, education, psychology, and particularly the health sciences. Through such reviews, researchers explore barriers and factors that affect the provision and utilization of services, as well as the perceptions and experiences of users and professionals. They also examine preferences that influence decision-making processes. In situations where quantitative evidence is uncertain or insufficient, the qualitative approach contributes to a deeper understanding of the phenomena and to the development of policies or practices that reflect real needs and human attitudes. In this way, the qualitative systematic review serves as a valuable tool for the interpretation and application of knowledge in practice.

Challenges and Limitations

Despite its advantages, the qualitative systematic review faces several challenges and limitations. The methodologies that underpin it are still evolving, and there is not always consensus on best practices, analytical procedures, or quality criteria. Moreover, the interpretative nature of the approach introduces the risk of subjectivity, as data analysis heavily depends on researchers’ interpretations. Therefore, it is essential to apply strategies that minimize bias and enhance transparency and authenticity of data. Evaluating the validity and reliability of the findings is a crucial element for ensuring the quality of the research process.

Conclusions

The qualitative systematic review is a dynamic and flexible research tool that advances scientific knowledge through the interpretative synthesis of qualitative data. It makes a significant contribution to understanding the complexity of human experiences and to the emergence of new theoretical or practical perspectives. Although it does not aim for generalization, it enables the formulation of interpretative theories that can be applied across various contexts. Through comparative and synthetic analysis, researchers can identify common trends, highlight divergences, and provide a holistic understanding of the studied phenomena. Ultimately, the value of the qualitative systematic review lies in its ability to bring together diverse voices and approaches into a coherent and meaningful body of knowledge, enriching understanding and fostering the evolution of scientific thought.