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The National Hospital Care Survey. Linda McCaig, M.P.H. National Center for Health Statistics August 8, 2012. NHCS Background. The National Hospital Care Survey integrates: National Hospital Discharge Survey (NHDS) - longest continuously fielded sample of inpatient care from 1965-2010

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The National Hospital Care Survey


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    1. The National Hospital Care Survey Linda McCaig, M.P.H. National Center for Health Statistics August 8, 2012

    2. NHCS Background The National Hospital Care Survey integrates: • National Hospital Discharge Survey (NHDS) - longest continuously fielded sample of inpatient care from 1965-2010 • National Hospital Ambulatory Medical Care Survey (NHAMCS) – survey of hospital ED and OPD visits since 1992, hospital ambulatory surgery visits since 2009, and freestanding ambulatory surgery center (ASC) visits since 2010 • Drug Abuse Warning Network (DAWN) - survey of drug-related ED visits conducted by SAMHSA from 1972-2011

    3. 112 geographic Primary Sampling Units ~ 500 hospitals ~ 400 EDs and ~ 250 OPDs (~1,000 OPD clinics) ~ 37,000 ED and ~ 35,000 OPD visits 4-week reporting period NHAMCS Sample Design

    4. National Hospital Care Survey Inpatient Component Ambulatory Component National Hospital Discharge Survey (NHDS) National Hospital Ambulatory Medical Care Survey (NHAMCS) Ambulatory Surgery ED OPD Drug Abuse Warning Network (DAWN)

    5. NHCS Sample Design • Target universe is inpatient discharges and in-person visits made to EDs, OPDs, and ambulatory surgery locations in: • Non-institutional hospitals • Non-federal hospitals • Hospitals with six or more staffed beds • Facility sample • 500 hospitals • 250 freestanding ambulatory surgery centers

    6. Protected Health Information (PHI) Both inpatient and ambulatory component will be collected for purposes of data linkage (e.g., NDI, Medicare/Medicaid data): • Patient identifiers: • Name; Address; Zip code; Social security number; Medical record number; and Patient control number • Physician identifiers: • Attending and Operating National Provider Identifiers (NPI)

    7. ED Visit Data Collection – General • Demographics • Dates and times • Waiting time, treatment time, length of ED visit • Expected source(s) of payment • Triage • Vital signs, Triage level, Pain scale • Seen in last 24 hours and discharged

    8. ED Visit Data Collection – General • Reason for visit • Up to 4 • Verbatim text and dropdown list • A Reason for Visit Classification for Ambulatory Care codes • Cause of injury • Up to 5 • Verbatim text and dropdown list • ICD-9-CM E-codes • Diagnosis • Up to 20 • Verbatim text and dropdown list • ICD-9-CM diagnosis codes • Chronic disease checklist

    9. ED Visit Data Collection – General • Lab Tests, Imaging, and Procedures • Medications prescribed • Up to 12 • Verbatim text and dropdown list • Multum Lexicon therapeutic drug category codes and NCHS drug entry codes • Given in ED or at discharge • Providers seen • Visit Disposition

    10. ED Visit Data Collection – General • Hospital Admission Data • Type of unit • Boarding time, length of hospital stay • Hospital discharge diagnosis (up to 2) • Hospital discharge status/disposition • Observation unit stay • Length of observation unit stay

    11. Thankyou More information: www.cdc.gov/nchs/nhcs.htm Linda McCaig lmccaig@cdc.gov