We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our
Privacy Policy.
psqi_11d
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. If you have a roommate or bed partner, ask him/her how often in the past month you have had: Episodes of disorientation or confusion during sleep Search for all PSQI variables within this dataset
psqi_2
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 long (in minutes) has it usually taken you to fall asleep each night? Search for all PSQI variables within this dataset
psqi_6
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 often have you taken medicine to help you sleep (prescribed or over the counter)? Search for all PSQI variables within this dataset
sawa107
under
Sleep Monitoring/Actigraphy
in
HCHS variables
Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.
sawa108
under
Sleep Monitoring/Actigraphy
in
HCHS variables
Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.
sawa299
under
Sleep Monitoring/Actigraphy
in
HCHS variables
Sleep Fragmentation is an index of restlessness during the sleep period expressed as a percentage. Kristen L et al. 2011 (PubMed ID:21411507) There are three type of measures for sleep fragmentation: movement Index (MI), fragmentation index (FI), and total sleep fragmentation Index. The fragmentation index refers to the percentage of 60s periods of sleep out of the total number of periods of immobility. The movement index refers to the total of scored awake minutes divided by sleep period (i.e. total time in bed). The total sleep fragmentation index is the sum of FI and MI. (ActiGraph validation reference)[https://actigraphcorp.force.com/support/s/article/Sleep-Fragmentation-Index-Validation-Reference]
slp_eff
under
Sleep Monitoring/Polysomnography/Sleep Architecture
in
SOF variables
Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB).Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage.