n1 - Search - Sleep Data - National Sleep Research Resource

Minutes of Sleep the Night Before the Night Before the MSLT (n1)

min_n1 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset

Average ORP During N1

avg_orp_n1 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Average Odds Ratio Product (ORP) in all 30-s epochs during manually scored sleep stages. ORP is a continuous index of sleep depth and wake propensity. A value of 0 indicates very deep sleep, a value of 2.5 indicates full wakefulness. Search for all EEG variables within this dataset

Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 (N1) from polysomnography

nsrr_pctdursp_s1 under Harmonized/Polysomnography/Sleep Architecture in SOF variables

Harmonized by the NSRR team. Source: :tmstg1p: at Visit 8

Diary: Bedtime on Night n1 before MSLT

bedtime1 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Diary: Naps on Day n1 before MSLT

naps_yn1 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Diary: Time Spent Napping Day n1 Before MSLT

naptime1 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Due to the timing of the sleep diary to nPSG, naptime1 is not available for Clinical MSLTs.

Percentage of stage 1 and 2 sleep among total sleep duration from type I polysomnography

pcttststage12 under Sleep Monitoring/Polysomnography in WSC variables

Conventionally, total sleep duration would be called total sleep time (TST).

Percentage of stage 1 sleep among total sleep duration from type I polysomnography

pcttststagen1 under Sleep Monitoring/Polysomnography in WSC variables

Conventionally, total sleep duration would be called total sleep time (TST).

Percentage of total sleep duration in stage 1 from type II polysomnography

timest1p under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables