Abstract

This study investigates the relationship between long COVID and health-related quality of life (HRQOL) in patients discharged for 6 months. It included 192 patients with a history of severe COVID-19 and 192 patients with a history of non-severe COVID-19 patients that were selected through quota sampling methods from the Medical Care Monitoring Center (MCMC) of hospitals in Shiraz, Iran, in 2020. Phone-based interviews were conducted to collect data using the short form of the 12-item health-related quality of life (SF-12) questionnaire. Descriptive statistics, including mean (standard deviation) and frequency (percentage), were utilized. Statistical tests, such as the chi-squared test, independent samples t-test, Fisher's exact test, and multiple linear regression models were performed. Statistical analysis was performed using SPSS software version 24, with a significance level of 0.05. Among 384 patients, 79.95 were married, with a mean age of 53.95 years. The majority of patients in both groups were male (57.81 in the severe group and 51.04 in the non-severe group). Patients with severe COVID-19 had significantly lower quality of life scores compared to those with non-severe COVID-19 (p < 0.001, 34.45 SD = 6.59 versus 39.64 SD = 5.07). Furthermore, multiple linear regression analysis indicated that severe COVID-19 inducts a significant negative effect on HRQOL in patients after adjustment of confounders (p < 0.001, B = - 4.84). Patients with severe COVID-19 had lower HRQOL compared to those with a non-severe level. It is necessary to consider implementing policies aimed at providing social, psychological, or medical support to improve the HRQOL of patients with a history of severe COVID-19.