4.4 Article

Global, regional, and national burden of low back pain, 1990-2020, its attributable risk factors, and projections to 2050: a systematic analysis of the Global Burden of Disease Study 2021

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LANCET RHEUMATOLOGY
Volume 5, Issue 6, Pages E316-E329

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This study provides the most up-to-date global, regional, and national data on the prevalence and years lived with disability (YLDs) for low back pain. It reveals that low back pain is the leading cause of YLDs globally and projects that there will be over 800 million cases of low back pain worldwide by 2050. Challenges persist in obtaining primary country-level data on low back pain, highlighting the need for more high-quality data to improve accuracy and monitoring of the condition.
Background Low back pain is highly prevalent and the main cause of years lived with disability (YLDs). We present the most up-to-date global, regional, and national data on prevalence and YLDs for low back pain from the Global Burden of Diseases, Injuries, and Risk Factors Study 2021. Methods Population-based studies from 1980 to 2019 identified in a systematic review, international surveys, US medical claims data, and dataset contributions by collaborators were used to estimate the prevalence and YLDs for low back pain from 1990 to 2020, for 204 countries and territories. Low back pain was defined as pain between the 12th ribs and the gluteal folds that lasted a day or more; input data using alternative definitions were adjusted in a network meta-regression analysis. Nested Bayesian meta-regression models were used to estimate prevalence and YLDs by age, sex, year, and location. Prevalence was projected to 2050 by running a regression on prevalence rates using Socio-demographic Index as a predictor, then multiplying them by projected population estimates. Findings In 2020, low back pain affected 619 million (95% uncertainty interval 554-694) people globally, with a projection of 843 million (759-933) prevalent cases by 2050. In 2020, the global age-standardised rate of YLDs was 832 per 100 000 (578-1070). Between 1990 and 2020, age-standardised rates of prevalence and YLDs decreased by 10 center dot 4% (10 center dot 9-10 center dot 0) and 10 center dot 5% (11 center dot 1-10 center dot 0), respectively. A total of 38 center dot 8% (28 center dot 7-47 center dot 0) of YLDs were attributed to occupational factors, smoking, and high BMI. Interpretation Low back pain remains the leading cause of YLDs globally, and in 2020, there were more than half a billion prevalent cases of low back pain worldwide. While age-standardised rates have decreased modestly over the past three decades, it is projected that globally in 2050, more than 800 million people will have low back pain. Challenges persist in obtaining primary country-level data on low back pain, and there is an urgent need for more high-quality, primary, country-level data on both prevalence and severity distributions to improve accuracy and monitor change. Funding Bill and Melinda Gates Foundation. Copyright (c) 2023 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license.

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