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Health Insurance Review and Assessment Service, Seoul, Korea
©2014, Korean Society of Epidemiology
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Sample type | Computation standard |
---|---|
HIRA - National Inpatient Sample (2009-2011) | 700,000 inpatients per year (13%), approximately 400,000 outpatients per year (1%) |
HIRA - National Patient Sample (2010-2011) | 1.4 million patients overall per year (3%) |
HIRA - Adult Patient Sample (2010-2011) | Approximately 1 million patients over the age of 65 per year (20%) |
HIRA - Pediatric Patient Sample (2010-2011) | Approximately 1.1 million patients under the age of 20 per year (10%) |
Country-based comparison | Korea (HIRA) | US (AHRQ) | Taiwan (NHIRD) |
---|---|---|---|
Sampling unit | Patient sampling | Hospital sampling | Patient sampling |
Unit of data provided | Patient based | Institution case-based (discharge data) | Patient data |
Stratification variable | Demographic characteristic (sex, age group) | Hospital characteristics Geographic location | Simple random sampling |
Data providee | All researchers | All researchers | National research institutions and researchers (general public uses the educational data set) |
Sampling unit | Inpatients, all patients, pediatric and teen patients, elderly patients under 1.5 million people per category | Approximately 7 million institutional cases (inpatient data) | Health-plan registrees, 1 million people |
Sample type | Sample size (%) | Estimated population | Actual population |
---|---|---|---|
HIRA - National Patient Sample | 1,375,842 (3) | 45,861,321 | 47,026,505 |
HIRA - National Inpatient Sample | 765,564 (13) | 5,888,921 | 6,026,063 |
HIRA - Adult Patient Sample | 1,073,183 (19) | 5,365,917 | 5,650,511 |
HIRA - Pediatric Patient Sample | 1,026,648 (10) | 10,266,474 | 10,681,503 |
Table | Variables |
---|---|
Table 20 (general specification) | Billing statement identification code (key ID), patient ID, provider’s ID, stratification variables, strata, age, gender, sample weight, DRG billing number, claims types, date of admission, insurance type, hospital arrival path way, major diagnosis, secondary diagnosis, injury from public service, days of care, initial date of care, final date of care, days in hospitalization, payer’s amount, patient’s out of pocket cost, total amount, surgical status |
Table 30 (healthcare services) | Billing statement identification code (Key ID), service category, classification type, unit price, total price, daily dosages, days of supply, quantity of supply, service codes, drug codes |
Table 40 (diagnosis information) | Billing statement identification code (key ID), indicator for major diagnosis, department, diagnosis |
Table 53 (outpatient prescriptions) | Billing statement identification code (key ID), classification type, unit price, total price, daily dosages, days of supply, quantity of supply, service codes, drug codes |
Table of Providers | Provider ID, type of providers, presence of special equipment (CT, MRI, PET), location, number of beds, number of staff per 50 beds - physicians, dentists, acupuncturists, and nurses |
The size of each sample data is either 1.5 million patients or 20% of the total number in the corresponding area of the original data HIRA, Health Insurance Review and Assessment Service.
HIRA, Health Insurance Review and Assessment Service; AHRQ, Agency for Healthcare Research and Quality; NHIRD, National Health Insurance Research Database.
The percentage of the total patients in claims data. Based on data from 2011.
IDs are given an alternative ID to protect private information.