NHAMCSNational Hospital Ambulatory Medical Care Survey
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Both inpatient and outpatient quantities are classified by diagnostic type and are derived using comprehensive detailed data from the NIS, the AHA annual survey, the NHAMCS, and CMS.
Data for NHAMCS are abstracted from patients' hospital records by trained hospital staff and recorded on a standardized patient record form (PRF).
There are 517,946 visit records from the NAMCS and NHAMCS for 1993, 1994, 1998, 1999, 2003, and 2004.
NHAMCS is National Hospital Ambulatory Medical Care Survey.
The actual visit sampling and data collection for the NHAMCS was primarily the responsibility of hospital staff.
From the NAMCS/ NHAMCS questionnaire, we cannot determine whether the ADE was the primary reason for the visit, and they do not permit attribution of the ADE to a specific medication or treatment.
During 2000-2006, mean annual rates of hospitalization for acute gastroenteritis were 203 hospitalizations per 100,000 persons according to NHDS data, 187 per 100,000 according to NIS data, and 109 per 100,000 according to NAMCS and NHAMCS data.
NAMCS and NHAMCS both impute missing race and ethnicity information (Sonnenfeld and Sisk 2008).
NHAMCS is an annual probability sample survey of hospital outpatient departments and emergency departments in the United States, first conducted in 1992 by CDC's National Center for Health Statistics.
End point Source (a) Notes Mortality CDC compressed mortality file, Nonaccidental nonaccidental, accessed through CDC WONDER (1996-1998) Respiratory hospital 1999 NHDS public use data files Incidence admissions Asthma ED visits 2000 NHAMCS public use data Incidence files 1999 NHDS public use data files MRADs Ostro and Rothschild (1989) Incidence School loss days U.
The NHAMCS is a national probability survey conducted by the Centers for Disease Control and Prevention's National Center for Health Statistics, and it includes data on in-person visits made in the United States to outpatient departments and EDs (McCaig and Nawar 2006).
In addition to disease trends, we reviewed health care information from the 1996 NHDS, NAMCS, and NHAMCS.