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A pseudo identifier with a consistent crosswalk to the true identifier retained by the source Data Partner. For analytical data sets requiring patient-level data, only the pseudo identifier is used to link across all information belonging to a patient.
psu_id
under
Administrative/Study Design
in
HCHS variables
This variable is the sample design clustering variable used in statistical analyses as the cluster variable that is combination of the field center and selected block group identifier.
This subject identifier was created by the National Sleep Research Resource (NSRR) team to more easily match with file downloads. Use 'pptid' to link with Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC) and cohort-specific data.
Subject identifier. Note that numbers are not sequential due to excluded participants. PSG ID value include S### (S001 to S132); values in SPSS file are numbered from 1 to 132.
This is the participant identifier that is present on Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC) datasets. Use nsrrid when linking these data to other data on the National Sleep Research Resource (NSRR).
The National Sleep Research Resource (NSRR) subject identifer links the subject's data and files. Use new_pid to link with Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC) and cohort-specific data.