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Posted by
szhivotovsky
on
May 16, 2023
in
Guest Blogger
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on pediatric data, the overall accuracy was 88.9%. But
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mixed cohort data, the overall accuracy was comparable to
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pediatric sleep stager (87.5%). Overall performance for older adults
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overall_shhs1
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
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.
overall_shhs2
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS2
in
SHHS variables
Overall study grade as assigned by scorer. These codes reflected the total duration of useable (artifact free, scorable) signals during sleep time across channels, weighing those signals most critical for accurate scoring of respiratory events and staging during sleep time. The Quality Assessment Form for SHHS2 was modified so that the overall quality grade and the signal quality codes were based on signals during sleep time. Since events were only scored during sleep time this provided a more accurate assessment of signal quality during the actual time or scoring. This change would only have affected the quality grade of a small number of studies in SHHS1 where there was a significant amount of time awake with very good signals combined with very poor signals that occurred during sleep. The overall and signal quality grades are comparable between SHHS1 and SHHS2.
weight_final_norm_overall
under
Administrative/Study Design
in
HCHS variables
The normalized sample weight is the overall normalized, calibrated, trimmed, nonresponse adjusted (household and person-level) reciprocal of a participant's probability of selection into the HCHS/SOL study. The base sample weights, i.e. the reciprocal of a participant's probability of selection into the HCHS/SOL study, were first adjusted by household-level and person-level non-response. The non-response adjusted sample weights were then trimmed using the selected average percentile that minimizes model MSE within each field center. All sample weights that fell above the selected percentile were trimmed to the selected percentile and the trimmed difference was evenly distributed among all of the non-trimmed sample weights. The trimmed, non-response adjusted sample weights were then calibrated using first the 7-category Hispanic Background distribution and then the 12-category age group/gender distribution using the 2010 Decennial Census. Finally, these calibrated, trimmed, non-response adjusted sample weights were normalized using the weighted mean divided by weighted standard deviation of the entire HCHS/SOL sample to normalize the expanded calibrated sample weights (WEIGHT_Final_Norm_Overall). This final sample weight variable is used for analyses purposes only.
abi_overall
under
Clinical Data/Vital Signs/Seated Blood Pressure
in
HCHS variables
Ankle Brachial Index (ABI) is the average ankle to arm systolic pressures as measured from the left and right sides. The higher of the two ankle measures on the same side is divided by the higher of the two systolic arm pressures to derive the right and left side ABI values. The overall ABI is the mean of those two measurements.
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study to determine if overall quality is sufficient to
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of each signal and overall study quality will be
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sleep, and iii) an overall QA grade to each
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or equipment problems. - “Overall” indicates the overall study quality, varying from
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provide information on the overall ability of the scorer
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psqi_9
under
Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
in
ANSWERS variables
Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771)External semantic reference: CDEOriginal text: The following questions relate to your usual sleep habits during the past month only. Your answers should indicate the most accurate reply for the majority of days and nights in the past month.During the past month, how would you rate your sleep quality overall? Search for all PSQI variables within this dataset
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In addition to the overall, combined AHI variables, most
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(central apneas alone) https://sleepdata.org/datasets/shhs/variables/ahi_a0h3 (overall AHI; all apneas +
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