Data resource profile: the Korea National Hospital Discharge In-depth Injury Survey

Abstract

The Korea National Hospital Discharge In-depth Injury Survey (KNHDIS), which was started in 2005, is a national probability survey of general hospitals in Korea with 100 or more beds conducted by the Korea Disease Control and Prevention Agency (KDCA). The KNHDIS captures approximately 9% of discharged cases from sampled hospitals using a 2-stage stratified cluster sampling scheme, among which 13% are injury related cases, defined as S00-T98 (injury, poisoning, and certain other consequences of external causes) using International Classification of Diseases, 10th revision codes. The KNHDIS collects information on characteristics of injury-related discharges in order to understand the scale of injuries, identify risk factors, and provide data supporting prevention policies and intervention strategies. The types of data captured include the hospitals’ information, detailed clinical information, and injury-related codes such as the mechanism, activities undertaken when injured (sports, leisure activities, work, treatment, and education), external causes of the injury, and location of the occurrence of the injury based on the International Classification of External Causes of Injuries. Furthermore, the means of transportation, risk factors for suicide, and toxic substances are recoreded. Annual reports of the KNHDIS are publicly accessible to browse via the KDCA website (http://www.kdca.go.kr) and microdata are available free of charge upon request via email (kcdcinjury@korea.kr).

Temporal trends and the association between self-rated oral health and falls in community-dwelling older adults in South Korea: a secondary analysis of survey data

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Area-Level Socioeconomic Inequalities in Intracranial Injury-Related Hospitalization in Korea: A Retrospective Analysis of Data From Korea National Hospital Discharge Survey 2008–2015

“…A stratified two-stage cluster sampling method was used, with individual hospitals as the primary sampling unit and discharged patients in a sampled hospital as the secondary sampling unit. 18 The study hospitals were selected based on a cluster random sample of hospitals stratified by geographic location and number of beds. To reflect the complex sampling, weightage was assigned to the variable that was the variance of the estimated total number of discharged patients, the medical institution code corresponding to the primary sampling unit of the sample design was set to cluster, and the number of beds was set to strata.…”

Assessing Trends in Hospitalizations for Breast Cancer Among Women in Korea: A Utilization of the Korea National Hospital Discharge In-depth Injury Survey (2006-2020)

“…This study utilized secondary data from the Korea National Hospital Discharge In-depth Injury Survey conducted between 2006 and 2020. The survey, conducted annually by the Korea Disease Control and Prevention Agency(KDCA) since 2005, aims to inform the development of cost-effective health policies by capturing the scale and characteristics of discharged patients (14).…”

“…The survey targets patients discharged from general hospitals with 100 beds or more nationwide. Based on the hospital size, 170 hospitals are selected as sample hospitals, collecting demographic information, admission details, disease, and treatment information, as well as injury data of discharged patients from medical records (14).…”