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psg_oanop3 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in PATS variables
rdi3p under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables
[(total number of apneas and hypopneas associated with >= 3% oxygen desaturation) / (hours of sleep)]
rdim3pns under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-supine body position associated with >= 3% desaturation) / (hours of sleep)]. will be missing if no time non-supine or low position sensor quality.
rdimnr3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM) associated with >= 3% desaturation) / (hours of non-rapid eye movement sleep (NREM))]
psg_rdim3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in PATS variables
missing if total sleep time is 1
psg_rdim3pns under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in PATS variables
missing if studies with problems scoring REM/NREM or if studies scored as sleep/wake or REM sleep time is 1
psg_rdimnr3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in PATS variables
missing if studies with problems scoring REM/NREM or if studies scored as sleep/wake or NREM sleep time is 1