Name
overall_shhs1
Label
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Overall signal quality
Description

Overall study grade as assigned by scorer. The overall quality grade is based on the quality and duration of EEG, respiratory and oximetry signals. Based on signal quality during recording time. Studies are given a study code varying from outstanding to fair. If interested in studies of the best quality, overall quality scores of Very Good, Excellent and Oustanding can be selected. This code reflects the total duration of useable (artifact free, scorable) signals across channels, weighing those signals most critical for accurate scoring of respiratory events and staging.

Domain
ovqus2
  • 1: Unsatisfactory
  • 2: Poor
  • 3: Fair
  • 4: Good
  • 5: Very Good
  • 6: Excellent
  • 7: Outstanding
Type
choices
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Overall signal quality vs Sleep Heart Health Study (SHHS) Visit Number
Visit 1 Interim Follow-up Visit Visit 2 CVD Outcomes
Total 5,804 - - -
Unsatisfactory - - - -
Poor - - - -
Fair 782 - - -
Good 1,121 - - -
Very Good 1,257 - - -
Excellent 1,523 - - -
Outstanding 1,121 - - -
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Overall signal quality vs Age at Sleep Heart Health Study Visit One (SHHS1)
Visit 1
35-44 years 45-54 years 55-64 years 65-74 years 75-84 years 85 years or older Total
Total 342 1,017 1,769 1,617 955 104 5,804
Unsatisfactory - - - - - - -
Poor - - - - - - -
Fair 40 132 217 214 152 27 782
Good 77 186 335 322 179 22 1,121
Very Good 55 214 411 363 201 13 1,257
Excellent 102 274 472 400 246 29 1,523
Outstanding 68 211 334 318 177 13 1,121
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Overall signal quality vs Gender of the participant
Visit 1
Male Female Total
Total 2,765 3,039 5,804
Unsatisfactory - - -
Poor - - -
Fair 374 408 782
Good 525 596 1,121
Very Good 603 654 1,257
Excellent 724 799 1,523
Outstanding 539 582 1,121
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Overall signal quality vs Race of the participant
Visit 1
White Black Other Total
Total 4,907 515 382 5,804
Unsatisfactory - - - -
Poor - - - -
Fair 618 128 36 782
Good 962 92 67 1,121
Very Good 1,085 88 84 1,257
Excellent 1,284 132 107 1,523
Outstanding 958 75 88 1,121