v0.9.0 (October 7, 2026)

• Update with new source datasets from contributor
• Add MSLT variable (mslt5)

v0.8.0 (December 23, 2025)

• Add 49 new variables (from WSC team) and data dictionary entries
• Add new Mailed Survey dataset and data dictionary entries
• Update variable folder paths to match current folder structure
• Add 4 new harmonized PSG variables (nsrr_avgdurah_hp4u; nsrr_pctdursp_salt90; nsrr_avglvlsa; nsrr_minlvlsa)
• Create new nsrr_file_prefix variable
• The CSV datasets generated from a new R script is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.8.0

v0.7.0 (July 17, 2024)

• Remove death data (WSC contributor request)
• Add ahi3 variable
• Add harmonized sleep architecture variables
• Add additional drug/medication variables
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.7.0

v0.5.0 (July 19, 2022)

• Update mean seated systolic (sbp_mean) and diastolic (dbp_mean) blood pressure variables (WSC team change)
• Remove individual readings for seated systolic and distolic blood pressure (WSC team change)
• Add harmonized seated blood pressure (nsrr_bp_diastolic, nsrr_bp_systolic)
• Add updated death data from WSC team
• Remove incident CVD/stroke variables (WSC team request; contact them for additional variables)
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.5.0

v0.4.0 (February 24, 2022)

• Add harmonized core polysomnography variables (nsrr_*)
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.4.0

v0.3.0 (December 6, 2021)

• Include additional context for blood draw variables (drawn morning after PSG)
• Add initial set of harmonized variables (nsrr_*)
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.3.0

v0.2.0 (April 28, 2021)

• Add variables for % sleep time in N1 and N2
• Add wsc-incident dataset with incident CVD/stroke outcomes
• Modify metadata for many medical history variables (e.g. stroke_ynd)
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.2.0

v0.1.0 (August 31, 2020)

• Added initial variable set from WSC source data
• Modified variable metadata to conform to NSRR standards and harmonized terms
• Created the wsc-data-dictionary repository using Spout v1.0.0
• The CSV datasets generated from a SAS export is located here:
  • \\rfawin\BWH-SLEEPEPI-NSRR-STAGING\20200115-peppard-wsc\nsrr-prep\_releases\0.1.0