• J Pain · Dec 2022

    The geography of pain in the United States and Canada.

    • Anna Zajacova, Jinhyung Lee, and Hanna Grol-Prokopczyk.
    • Sociology, University of Western Ontario, Ontario. Electronic address: anna.zajacova@uwo.ca.
    • J Pain. 2022 Dec 1; 23 (12): 215521662155-2166.

    AbstractPain epidemiologists have, thus far, devoted scant attention to geospatial analyses of pain.  Both cross-national and, especially, subnational variation in pain have been understudied, even though geographic comparisons could shed light on social factors that increase or mitigate pain. This study presents the first comparative analysis of pain in the U.S. and Canada, comparing the countries in aggregate, while also analyzing variation across states and provinces. Analyses are based on cross-sectional data collected in 2020 from U.S. and Canadian adults 18 years and older (N = 4,113). The focal pain measure is a product of pain frequency and pain interference. We use decomposition and regression analyses to link socioeconomic characteristics and pain, and inverse-distance weighting spatial interpolation to map pain levels. We find significantly and substantially higher pain in the U.S. than in Canada. The difference is partly linked to Americans' worse economic conditions. Additionally, we find significant pain variability within the U.S. and Canada. U.S. states in the Deep South, Appalachia, and parts of the West stand out as pain 'hotspots' with particularly high pain levels. Overall, our findings identify areas with a high need for pain prevention and management; they also urge further scholarship on geographic factors as important covariates in population pain. PERSPECTIVE: This study documents the high pain burden in the U.S. versus Canada, and points to states in the Deep South, Appalachia, and parts of the West as having particularly high pain burden. The findings identify geographic areas with a high need for pain prevention and management.Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.

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