Prevalence, Symptoms, and Associated Factors of Long COVID-19: A Cross-Sectional Survey Study

OBJECTIVE: Long COVID is defined as persistent or newly developed symptoms after the acute phase of COVID-19 infection. This study aimed to evaluate the prevalence of long COVID, types of symptoms, and associated factors.METHODS: This was a cross-sectional survey including individuals with a history of COVID-19 infection aged ≥ 18 years who were followed up at our hospital. The presence of abnormal symptoms and clinical features were obtained through a questionnaire.RESULTS: A total of 307 individuals with a median age of 58 years (interquartile range 35–74 years) were included in this study. Among them, 53.1% were females, and 56.0% had underlying diseases. The prevalence of long COVID was 40.1%. Cardiopulmonary (36.6%) and nonspecific general symptoms (22.0%) were the most common symptoms. We did not find significant association long COVID and any characteristic features of the participants, numbers of COVID vaccination or infection episodes.CONCLUSION: The prevalence of long COVID was 40.1%. No factors significantly associated with long COVID were observed. Cardiopulmonary and general symptoms were the most common symptoms.