Sleep Heart Health Study

Age at time of study in years, based on start date of Sleep Heart Health Study Visit One (SHHS1) Polysomnography (PSG) recording.

Age at time of study in years, based on start date of Sleep Heart Health Study Visit One (SHHS1) Polysomnography (PSG) recording.

Age at time of study in years, based on start date of Sleep Heart Health Study Visit One (SHHS1) Polysomnography (PSG) recording.

Age in years at the time of the Sleep Heart Health Study Visit Two (SHHS2) visit

Note: This variable was derived from race and was not asked as a separate demographic question. At the time of SHHS Visit 1, race and ethnicity were collected together in a single question. This variable was derived later on when the datasets were prepared for deposition in Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC).

Gender as reported by Parent Cohort

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.

This participant ID matches what is present in Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC).

Race is presented as three (3) categories based on suggested Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC) de-identification procedures.