National Inpatient Sample

The National Inpatient Sample (NIS) is a large database in the United States that collects information about hospital stays. It includes data from millions of patients across many hospitals, capturing details like diagnoses, treatments, and outcomes. Researchers and policymakers use the NIS to analyze healthcare trends, understand patient demographics, and assess the quality of care. By studying this data, they can identify patterns, improve healthcare services, and inform decisions that may enhance patient care and public health. The NIS is crucial for understanding the U.S. healthcare system and improving it over time.