The objective of this observational study was to evaluate the relationship between the oral cancer mortality rate and socioeconomic indicators throughout the Brazilian territory, between 2010 and 2019. The variables used in this study were oral cancer mortality rate from the Mortality Information System (SIM), population data from the Brazilian Institute of Geography and Statistics (IBGE), to calculate oral cancer mortality rates, along with the Human Development Index (HDI) and Social Vulnerability Index (SVI). The analysis was performed in tertile stratifications (Microsoft Excel 16.0), while temporal trends were examined by segmented linear regression (JoinPoint 4.9.0). High mortality rates were observed in more developed regions (South and Southeast), whereas temporal analysis showed significant increasing trends in the North (APC=+3.9%; p<0.05) and Northeast (APC=+2.4%; p<0.05) regions. The greater HDI (APC=+1.7%; p<0.05) and SVI (APC=+2.2%; p<0.05) tertiles had the lowest annual percentage increase, showing an inverse relationship between the temporal trend of mortality and socioeconomic indicators. Despite the higher number of oral cancer deaths located in regions with higher social indices, increasing temporal trends are more accentuated in regions with lower socioeconomic levels.


中文翻译：

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巴西社会经济地位与口腔癌死亡率的关联：时间趋势和空间分布

这项观察性研究的目的是评估 2010 年至 2019 年间整个巴西领土的口腔癌死亡率与社会经济指标之间的关系。这项研究中使用的变量是来自死亡率信息系统 (SIM) 的口腔癌死亡率，来自巴西地理与统计研究所 (IBGE) 的人口数据，以及人类发展指数 (HDI) 和社会脆弱性指数 (SVI)，用于计算口腔癌死亡率。分析采用三分位数分层 (Microsoft Excel 16.0) 进行，同时通过分段线性回归 (JoinPoint 4.9.0) 检查时间趋势。在较发达地区（南部和东南部）观察到死亡率较高，而时间分析显示北部地区死亡率呈显着上升趋势（APC=+3. 9%；p<0.05）和东北地区（APC=+2.4%；p<0.05）。较大的 HDI（APC=+1.7%；p<0.05）和 SVI（APC=+2.2%；p<0.05）三分位数的年度百分比增长率最低，显示死亡率的时间趋势与社会经济指标之间呈反比关系。尽管口腔癌死亡人数较多位于社会指数较高的地区，但在社会经济水平较低的地区，增加的时间趋势更为突出。