Global, regional, and national burden of disorders affecting the nervous system, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021

BackgroundDisorders affecting the nervous system are diverse and include neurodevelopmental disorders, late-life neurodegeneration, and newly emergent conditions, such as cognitive impairment following COVID-19. Previous publications from the Global Burden of Disease, Injuries, and Risk Factor Study estimated the burden of 15 neurological conditions in 2015 and 2016, but these analyses did not include neurodevelopmental disorders, as defined by the International Classification of Diseases (ICD)-11, or a subset of cases of congenital, neonatal, and infectious conditions that cause neurological damage. Here, we estimate nervous system health loss caused by 37 unique conditions and their associated risk factors globally, regionally, and nationally from 1990 to 2021.MethodsWe estimated mortality, prevalence, years lived with disability (YLDs), years of life lost (YLLs), and disability-adjusted life-years (DALYs), with corresponding 95% uncertainty intervals (UIs), by age and sex in 204 countries and territories, from 1990 to 2021. We included morbidity and deaths due to neurological conditions, for which health loss is directly due to damage to the CNS or peripheral nervous system. We also isolated neurological health loss from conditions for which nervous system morbidity is a consequence, but not the primary feature, including a subset of congenital conditions (ie, chromosomal anomalies and congenital birth defects), neonatal conditions (ie, jaundice, preterm birth, and sepsis), infectious diseases (ie, COVID-19, cystic echinococcosis, malaria, syphilis, and Zika virus disease), and diabetic neuropathy. By conducting a sequela-level analysis of the health outcomes for these conditions, only cases where nervous system damage occurred were included, and YLDs were recalculated to isolate the non-fatal burden directly attributable to nervous system health loss. A comorbidity correction was used to calculate total prevalence of all conditions that affect the nervous system combined.FindingsGlobally, the 37 conditions affecting the nervous system were collectively ranked as the leading group cause of DALYs in 2021 (443 million, 95% UI 378–521), affecting 3·40 billion (3·20–3·62) individuals (43·1%, 40·5–45·9 of the global population); global DALY counts attributed to these conditions increased by 18·2% (8·7–26·7) between 1990 and 2021. Age-standardised rates of deaths per 100 000 people attributed to these conditions decreased from 1990 to 2021 by 33·6% (27·6–38·8), and age-standardised rates of DALYs attributed to these conditions decreased by 27·0% (21·5–32·4). Age-standardised prevalence was almost stable, with a change of 1·5% (0·7–2·4). The ten conditions with the highest age-standardised DALYs in 2021 were stroke, neonatal encephalopathy, migraine, Alzheimer's disease and other dementias, diabetic neuropathy, meningitis, epilepsy, neurological complications due to preterm birth, autism spectrum disorder, and nervous system cancer.InterpretationAs the leading cause of overall disease burden in the world, with increasing global DALY counts, effective prevention, treatment, and rehabilitation strategies for disorders affecting the nervous system are needed

Prevalence of antenatal depression and associated factors among pregnant women during COVID-19 pandemic in North Shewa zone, Amhara region, Ethiopia

Background: Antenatal depression is a form of depression that occurs during pregnancy. This problem may worsen during the COVID-19 epidemic and may result in serious consequences for pregnant women, including depression and other multiple psychosocial problems. However, the prevalence of depression during the COVID-19 pandemic in pregnant women and its associated factors has not been studied in the study area, even in Ethiopia. Methods: An institution-based cross-sectional study was conducted among 422 pregnant women who were attending antenatal care in public health institutions in the North Shewa Zone, Ethiopia. The data were collected from May 1- June 30, 2021. A logistic regression model with adjusted odds ratio (AOR) and P-value < 0.05 at the 95% confidence interval was used to determine significantly associated factors. Results: The prevalence of antenatal depression among pregnant women during the COVID-19 pandemic was 34.1% (95% CI: 29.6–38.9). Divorced marital status (AOR = 7.52, CI: 2.707–20.911), husband’s educational status “cannot read and write” (AOR = 4.05, CI: 1.834–8.962) and “can read and write without formal education” (AOR = 2.39, CI: 1.107–5.154) are statistically significant variables associated with depression among pregnant women during the COVID-19 pandemic. Conclusions: In this study, the prevalence of antenatal depression in pregnant women during the novel coronavirus pandemic was high. To reduce the level of depression in pregnant women, strategies have to be designed for the early detection of divorced pregnant women with inadequate social support and address enough information for pregnant women and their husbands about depression and COVID-19 during the pandemic

Global, regional, and national burden of disorders affecting the nervous system, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021

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