Hepatitis A incidence and socioenvironmental determinants in Brazil: a 20-year time-series dataset

This dataset contains annual data on hepatitis A incidence and associated socioenvironmental determinants in Brazil over a 20-year period. It was compiled to support ecological time-series analyses investigating how structural and environmental factors influence the temporal dynamics of hepatitis A transmission.
The dataset includes the number of confirmed hepatitis A cases and corresponding population estimates, allowing the calculation of incidence rates per 100,000 inhabitants. Socioeconomic conditions are represented by the Human Development Index (HDI) and sanitation coverage, reflecting structural determinants related to living conditions and access to basic infrastructure.
Environmental variability is captured through hydrological indicators, including the annual number of inundation events and flood events. These variables were combined into a composite indicator of hydrological extremes (hydro_extreme), representing environmental disturbances that may affect pathogen transmission pathways, particularly in regions with limited sanitation infrastructure.
Additionally, the dataset includes a binary variable indicating the post-vaccination period (from 2014 onwards), allowing the assessment of the impact of hepatitis A vaccine introduction on incidence trends.
All variables were harmonized and structured for use in statistical modeling, particularly negative binomial regression and time-series analyses. The dataset is suitable for epidemiological, environmental health, and public health research focused on infectious disease dynamics and socioenvironmental determinants.

本数据集涵盖巴西20年间甲型肝炎（Hepatitis A）发病率及相关社会环境决定因素的年度数据，其编纂旨在支撑生态学时间序列分析，以探究结构与环境因素如何影响甲型肝炎传播的时间动态。
数据集包含确诊甲型肝炎病例数与对应人口估算值，可用于计算每10万居民的发病率。社会经济状况以人类发展指数（Human Development Index, HDI）及卫生设施覆盖率表征，反映与居住条件、基础基础设施可及性相关的结构性决定因素。
环境变异性通过水文指标刻画，包括年度洪涝事件与洪水事件的发生次数。上述变量被整合为名为hydro_extreme的水文极端事件综合指标，用以表征可能干扰病原体传播路径的环境扰动，尤其在卫生基础设施不足的区域。
此外，数据集包含一项二分类变量，用于标识2014年起的疫苗接种后时期，从而可评估甲型肝炎疫苗接种推广对发病率趋势的影响。
所有变量均经过标准化处理并结构化，适配统计建模需求，尤其适用于负二项回归与时间序列分析。本数据集适用于聚焦传染病动态及社会环境决定因素的流行病学、环境健康及公共卫生研究。