HCUP National Inpatient Database

The NIS is the largest publicly available all-payer inpatient healthcare database designed to produce U.S. regional and national estimates of inpatient utilization, access, cost, quality, and outcomes. Unweighted, it contains data from around 7 million hospital stays each year. Weighted, it estimates around 35 million hospitalizations nationally. Developed through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality (AHRQ), HCUP data inform decision making at the national, State, and community levels.

Its large sample size is ideal for developing national and regional estimates and enables analyses of rare conditions, uncommon treatments, and special populations.

国家住院样本（National Inpatient Sample，NIS）是目前规模最大的公开全付费方住院医疗数据库，旨在生成美国区域及全国层面的住院服务利用、可及性、医疗成本、服务质量与治疗结局相关评估数据。未加权状态下，该数据库每年收录约700万次住院事件数据；经加权校准后，可估算出全国范围内约3500万例住院人次。本数据库由医疗保健研究与质量局（Agency for Healthcare Research and Quality, AHRQ）资助，通过联邦-州-行业三方合作模式开发，其所属的医疗成本与利用项目（Healthcare Cost and Utilization Project, HCUP）的相关数据可为国家、州级及社区层面的决策提供支撑。
其庞大的样本量十分适配全国及区域层面的评估研究需求，同时支持针对罕见病症、非常规治疗方案及特殊人群开展分析研究。

搜集汇总

背景与挑战

背景概述

HCUP国家住院数据库是美国最大的公开可用的全支付方住院医疗数据库，旨在生成住院利用、成本、质量和结果的国家和区域估计。未加权数据每年包含约700万次住院记录，加权后估计全国约3500万次住院，其大样本量使其特别适合分析罕见疾病、特殊人群和进行趋势研究。