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avgspo2baseline_f1t3
under
Sleep Monitoring/Polysomnography/Administrative
in
NUMOM2B variables
The EDF and XML annotation files from the nuMoM2b sleep substudy were imported in Matlab for analysis of baseline SpO2 (oxygen saturation). First step involved identification of the initial sleep onset (stage=2). Sixty seconds of wake data preceding the initial sleep onset was identified as the baseline segment for calculation of average SpO2. If 60s of wake data was not present, 30s was used as the baseline segment. Average value of SpO2 signal was calculated at this baseline segment. If there was no usable SpO2 signal or baseline wake data before sleep onset, then baseline SpO2 is missing. A few subjects had less than 90% SpO2 at baseline either due to signal distortion/artifacts or baseline desaturation events and were marked as missing.
Hispanic Community Health Study / Study of Latinos
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is PID. ### part_derv_lad1.sas7bdat (Baseline Visit) The participant derived
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participant (16,415 observations) at baseline PART_DERV_LAD1. This file is
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found here. ### slea_lad1.sas7bdat (Baseline Visit) The sleep history
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Hispanic Community Health Study / Study of Latinos
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available from the HCHS/SOL Baseline visit and raw actigraphy
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Core data from the Baseline and Sueño Ancillary visits.
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polysomnography data from the Baseline visit. ## Protocols and manuals - Baseline Protocol and Data Collection Manuals - Baseline Sleep Monitoring Manual - Baseline Dataset Descriptions - Sueño
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certified scorer. For the baseline examination, respiratory events were
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a >90% decrease from baseline in flow as measured
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a >50% decrease from baseline in flow as measured
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Baseline = readings from the baseline visit Followup = readings
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(approximately 3 months after baseline) Subjects were randomized at baseline, followed for 3 months,
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subjects have both a "baseline" and "followup" reading. (E.g.
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of the amplitude of “baseline” breathing, i.e. to < 25% of the baseline, (identified during a period
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of the amplitude of “baseline”, i.e. to < 70% of baseline, (identified during a period
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of the amplitude of “baseline” breathing) if this change
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for ≥ 10 s. Baseline breathing is defined as
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of the amplitude of “baseline” (identified during a period
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addressed? Chance imbalance in baseline characteristics is common in
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covariates were measured at baseline and outcomes were measured at baseline, 6 months, and 12
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Summary Chance imbalance in baseline characteristics is common in
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Posted by
michaelprerau
on
June 6, 2022
in
Guest Blogger
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having cardiovascular disease at baseline after adjusting for pre-specified
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of prevalent CVD at baseline compared to no insomnia/OSA
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with prevalent CVD at baseline, resulting in reduced statistical
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(Visit 1) -- the baseline clinic visit and polysomnogram
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call 2-3 years after baseline - 5,804 rows, despite
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stroke, heart attack) between baseline and 2008-2011 (varies by
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for ABC participants at baseline and at follow-up. Each
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30% and 50% from baseline levels. Events with the
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greater than 50% from baseline levels. If interested in
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152 randomized participants at baseline and 93 at followup.
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30% and 50% from baseline levels. Events with the
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greater than 50% from baseline levels. If interested in
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weight, demographics and other baseline characteristics. ## Methods ###
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decrease (> 90%) from baseline in the amplitude of
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but ≤ 90%) from baseline in the amplitude of
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Posted by
michaelprerau
on
August 1, 2022
in
Guest Blogger
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the children completed a baseline and follow-up polysomnography after
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WWSC), who underwent a baseline overnight nocturnal polysomnography first,
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OSA-related frequency bands from baseline to follow-up were computed.
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12-lead ECG at the baseline SHHS exam; or if
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record before the SHHS baseline exam. 3/ AFIB incident
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any time between the baseline PSG and the final
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I have dowloaded both baseline and follow up files.
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failure current treatment at baseline with ARBs 3%ODI and 4%ODI at baseline sleep study time spent
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between variables from the baseline and follow up datasets.
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Version 7 capitalized the baseline variable names, but that
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a difference between the baseline and follow up variables?
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