10/03/02
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Remote Access Systems
•National Center for Health Statistics' (NCHS) system is handled by its RDC and has two components:
–After a proposal is approved, RDC staff develop a "pseudo" data file which has the statistical properties of the actual data file.  This fictitious file is then sent to the researcher who uses it to debug computer programs. 
–Researcher sends NCHS debugged files by email:
•All programs are automatically scanned upon arrival for non-allowable commands (certain SAS procedures are disabled). 
•The output is reviewed before it is emailed back to the researcher. (For information: http://www.cdc.gov/nchs/r&d/rdc.htm)
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