Prevalence and Characteristics of Chronic Pain Among Patients in Portuguese Primary Care Units

Abstract

Introduction: Chronic pain (CP) negatively impacts the lives of almost 2 billion people worldwide, including approximately 37% of adults in Portugal. As most of these patients are followed by a general practitioner, identifying the prevalence and characterizing the pain of patients who visit primary care units will provide valuable insights into the CP landscape in Portugal. Methods: To achieve this goal, an observational, cross-sectional study was conducted in 58 primary care units of mainland Portugal between June 2017 and March 2018. Interviews were conducted with 8445 patients, and 578 CP patients were characterized. Results: We observed that one third of patients suffered from CP, and of these, approximately one third felt that their pain management was insufficient. Most of the population was 55 years old or older, retired, and had more than three comorbidities. However, age and the number and type of comorbidities were not predictors of pain intensity. Additionally, most of the population had pain or discomfort that hindered their mobility and the performance of their everyday activities. This decrease in the quality of life led to feelings of anxiety and depression, which were associated with pain intensity. Conclusion: Given the high prevalence of CP, strategies to improve the quality of life of these patients and decrease the negative impacts, as well as awareness campaigns to increase the populations’ knowledge of this condition, are essential for the suitable and timely treatment of CP.