Background: Uterine fibroids are the most common benign neoplasm of the uterus and a major source of morbidity for women. We report an overview of trends in uterine fibroids of incidence, prevalence, years lived with disability (YLDs) in 204 countries and territories over the past 30 years and associations with age, period, and birth cohort.
Methods: The incidence, prevalence, and YLDs were derived from the Global Burden of Disease 2019 (GBD 2019) study. We utilized an age-period-cohort (APC) model to estimate annual percentage changes in age-standardized rate (ASR) for incidence, ASR for prevalence, ASR for YLDs (net drifts), annual percentage changes from 10 - 14 years to 65 - 69 years (local drifts), period and cohort relative risks (period/cohort effects) between 1990 to 2019.
Results: Globally, the incident cases, prevalent cases, and the number of YLDs of uterine fibroids increased from 1990 to 2019 with the growth of 67.07%, 78.82% and 77.34%, respectively. High Socio-demographic Index (SDI) and high-middle SDI quintiles with decreasing trends (net drift < 0.0%), and increasing trends (net drift > 0.0%) were observed in middle SDI, low-middle SDI, and low SDI quintiles in annual percentage change of ASR for incidence, ASR for prevalence and ASR for YLDs over the past 30 years. There were 186 countries and territories that showed an increasing trend in ASR for incidence, 183 showed an increasing trend in ASR for prevalence and 174 showed an increasing trend in ASR for YLDs. Moreover, the effects of age on uterine fibroids increased with age and peaked at 35 - 44 years and then declined with advancing age. Both the period and cohort effects on uterine fibroids showed increasing trend in middle SDI, low-middle SDI and low SDI quintiles in recent 15 years and birth cohort later than 1965.
Conclusions: The global burden of uterine fibroids is becoming more serious in middle SDI, low-middle SDI and low SDI quintiles. Raising awareness of uterine fibroids, increasing medical investment and improving levels of medical care are necessary to reduce future burden.