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Nulliparous Pregnancy Outcomes Study Monitoring Mothers-to-be

Name Label Folder
ahiq_f1t3
B3. AHI entered on QS Form. All apneas and hypopneas per hour of sleep. from type III home sleep apnea test
B3. AHI entered on QS Form. All apneas and hypopneas per hour of sleep. from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertahi50_f1t3
C1b1. Apnea-hypopnea index (AHI) > 50 (No/Yes) from type III home sleep apnea test
C1b1. Apnea-hypopnea index (AHI) > 50 (No/Yes) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecgafib_f1t3
b3f. Atrial fibrillation and/or flutter from type III home sleep apnea test
b3f. Atrial fibrillation and/or flutter from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecghr150_f1t3
b3b. HR for >2 continuous minutes is >150 bpm from type III home sleep apnea test
b3b. HR for >2 continuous minutes is >150 bpm from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecghr40_f1t3
b3a. HR for >2 continuous minutes is <40 bpm from type III home sleep apnea test
b3a. HR for >2 continuous minutes is <40 bpm from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecgsecond_f1t3
b3d. Type 2 second degree AV block from type III home sleep apnea test
b3d. Type 2 second degree AV block from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecgthird_f1t3
b3e. Third degree AV block from type III home sleep apnea test
b3e. Third degree AV block from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecgwide_f1t3
b3c. Sustained wide complex rhythm from type III home sleep apnea test
b3c. Sustained wide complex rhythm from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alertecgyn_f1t3
b3. Specific heart rate and/or ECG finding (No/Yes) from type III home sleep apnea test
b3. Specific heart rate and/or ECG finding (No/Yes) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alerthyporest_f1t3
b2a. Baseline O2 sat < 88% from type III home sleep apnea test
b2a. Baseline O2 sat < 88% from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alerthyposleep_f1t3
b2b. O2 sat during sleep <90% for >10% of sleep time from type III home sleep apnea test
b2b. O2 sat during sleep <90% for >10% of sleep time from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
alerthypoyn_f1t3
b2. Severe hypoxemia (No/Yes) from type III home sleep apnea test
b2. Severe hypoxemia (No/Yes) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
anlysstartap_f1t3
B4a. AM/PM from type III home sleep apnea test
B4a. AM/PM from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
anlysstart_f1t3
B4. Analysis Start (0-1159) from type III home sleep apnea test
B4. Analysis Start (0-1159) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
anlysstopap_f1t3
B5a. AM/PM from type III home sleep apnea test
B5a. AM/PM from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
anlysstop_f1t3
B5. Analysis Stop (0-1159) from type III home sleep apnea test
B5. Analysis Stop (0-1159) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
artifact_f1t3
Total Artifact Time (Unscorable) from type III home sleep apnea test
Total Artifact Time (Unscorable) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
avgspo2baseline_f1t3
Average oxygen saturation before sleep onset
Average oxygen saturation before sleep onset

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.

Sleep Monitoring/Polysomnography/Administrative
reviewerid_f1t3
Reviewer ID from type III home sleep apnea test
Reviewer ID from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
scorerid_f1t3
PSG Report: Scorer ID from type III home sleep apnea test
PSG Report: Scorer ID from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
scoreridqs_f1t3
Scorer ID from type III home sleep apnea test
Scorer ID from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
stdytype_f1t3
A4a. Type of Sleep Study from type III home sleep apnea test
A4a. Type of Sleep Study from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
totalhrs_f1t3
B6. Total recording period (hours) from type III home sleep apnea test
B6. Total recording period (hours) from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
totalmin_f1t3
B6. Total Recording Time (minutes) from type III home sleep apnea test
B6. Total Recording Time (minutes) from type III home sleep apnea test

Total analysis period: from "analysis starts" to "analysis ends"

Sleep Monitoring/Polysomnography/Administrative
unitid_f1t3
A5. Unit ID from type III home sleep apnea test
A5. Unit ID from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative
urgalertyn_f1t3
C1. Did review result in urgent alerts? from type III home sleep apnea test
C1. Did review result in urgent alerts? from type III home sleep apnea test Sleep Monitoring/Polysomnography/Administrative