We are very pleased to welcome MDHC into the broader NHDS
Address : Kings College Hospital NHDS
Foundation TrustUnit 1
For the 2010 NHDS
, (NCHS, 2010b) used the CMS MS-DRG Grouper software Version 27.
We used the 2000 Census of Population and Housing to obtain more age specificity, and then corrected the 2000 Census figures so that the total population equaled the total for 1999 forecasted by NHDS
A similar trio of indexes produced from NHDS
data is presented in the second panel of chart 1.
For 1995, NHDS
estimates less than 5000 generally have a relative standard error of more than 30% or are based on a sample of fewer than 30 cases.
, unlike the other databases we use, includes a variable indicating whether the admission was "Elective," "Urgent," or an "Emergency.
Many of the VTE diagnoses reported via NHDS
might have occurred during hospitalization, when the risk for VTE is known to be elevated (e.
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.
Moreover, the NHDS
data comprise hospital inpatient codes, which are unlikely to include a diagnosis of metabolic syndrome (Diabetes Care 2005;28:1831-2).
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.
Of note, the HCUP-NIS is restricted to states that maintain statewide, all-payer, discharge-data files, while the NHDS
uses an unrestricted sampling frame.