Sleep Questionnaires - Sleep Habits - ANSWERS Variables - Sleep Data - National Sleep Research Resource - NSRR

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	Name	Label	Folder
	msf Midpoint of sleep on weekends/freedays	Midpoint of sleep on weekends/freedays Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	msfsc1 Chronotype/Midpoint of sleep corrected for freedays	Chronotype/Midpoint of sleep corrected for freedays Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	msfsc2 Chronotype with missing data for individuals who use an alarm clock on weekends/freedays	Chronotype with missing data for individuals who use an alarm clock on weekends/freedays Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	msw Midpoint of sleep on Weekdays/workdays	Midpoint of sleep on Weekdays/workdays Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	socialjetlag Social Jet Lag	Social Jet Lag Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_bts Weekday Bedtime to Sleeptime	Weekday Bedtime to Sleeptime Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_se Weekday Sleep Efficiency	Weekday Sleep Efficiency Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_sol Weekday Sleep Onset Latency	Weekday Sleep Onset Latency Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_tfa Weekday Time of Final Awakening	Weekday Time of Final Awakening Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_tib Weekday Time in Bed	Weekday Time in Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_tob Weekday Time out of Bed	Weekday Time out of Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_tst Weekday Total Sleep Time	Weekday Total Sleep Time Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_ttb Weekday Time to Bed	Weekday Time to Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_tts Weekday Time to Sleep	Weekday Time to Sleep Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_twt Weekday Total Wake Time	Weekday Total Wake Time Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	wd_waso Weekday Wake after Sleep Onset (WASO)	Weekday Wake after Sleep Onset (WASO) Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_bts Weekend Bedtime to Sleeptime	Weekend Bedtime to Sleeptime Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_se Weekend Sleep Efficiency	Weekend Sleep Efficiency Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_sol Weekend Sleep Onset Latency	Weekend Sleep Onset Latency Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_tfa Weekend Time of Final Awakening	Weekend Time of Final Awakening Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_tib Weekend Time in Bed	Weekend Time in Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_tob Weekend Time out of Bed	Weekend Time out of Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_tst Weekend Total Sleep Time	Weekend Total Sleep Time Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_ttb Weekend Time to Bed	Weekend Time to Bed Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_tts Weekend Time to Sleep	Weekend Time to Sleep Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_twt Weekend Total Wake Time	Weekend Total Wake Time Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	we_waso Weekend Wake after Sleep Onset (WASO)	Weekend Wake after Sleep Onset (WASO) Item calculated based on combined review of Split week self-assessment of sleep survey (SASS-Y) and the Munich Chronotype Questionnaire (MCTQ). Search for all SASS-Y/MCTQ variables within this dataset	Sleep Questionnaires/Sleep Habits
	psqi_1 Pittsburgh Sleep Quality Index: When usually gone to bed the past month	Pittsburgh Sleep Quality Index: When usually gone to bed the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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, what time have you usually gone to bed at night? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_10 Pittsburgh Sleep Quality Index: Do you have a bed partner or roommate?	Pittsburgh Sleep Quality Index: Do you have a bed partner or roommate? Item related to Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original text: Do you have a bed partner or roommate? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_11a Pittsburgh Sleep Quality Index: Frequency of loud snoring in the past month reported by a roommate/bed partner	Pittsburgh Sleep Quality Index: Frequency of loud snoring in the past month reported by a roommate/bed partner Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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: Loud snoring Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_11b Pittsburgh Sleep Quality Index: Frequency of long pauses between breaths while asleep in the past month reported by a roommate/bed partner	Pittsburgh Sleep Quality Index: Frequency of long pauses between breaths while asleep in the past month reported by a roommate/bed partner Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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: Long pauses between breaths while asleep Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_11c Pittsburgh Sleep Quality Index: Frequency of legs twitching or jerking while asleep in the past month reported by a roommate/bed partner	Pittsburgh Sleep Quality Index: Frequency of legs twitching or jerking while asleep in the past month reported by a roommate/bed partner Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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: Leg twitching or jerking while you sleep Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_11d Pittsburgh Sleep Quality Index: Frequency of episodes of disorientation or confusion during sleep in the past month reported by a roommate/bed partner	Pittsburgh Sleep Quality Index: Frequency of episodes of disorientation or confusion during sleep in the past month reported by a roommate/bed partner Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_11e Pittsburgh Sleep Quality Index: Frequency of other restlessness while asleep in the past month reported by a roommate/bed partner	Pittsburgh Sleep Quality Index: Frequency of other restlessness while asleep in the past month reported by a roommate/bed partner Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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: Other restlessness while you sleep Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_2 Pittsburgh Sleep Quality Index: How long taken to fall asleep each night the past month	Pittsburgh Sleep Quality Index: How long taken to fall asleep each night the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_3 Pittsburgh Sleep Quality Index: What time gotten up in the morning the past month	Pittsburgh Sleep Quality Index: What time gotten up in the morning the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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, what time have you usually gotten up in the morning? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_4 Pittsburgh Sleep Quality Index: Hours of actual sleep at night the past month	Pittsburgh Sleep Quality Index: Hours of actual sleep at night the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 many hours of actual sleep did you get at night (this may be different than the number of hours you spend in bed)? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5a Pittsburgh Sleep Quality Index: Cannot get to sleep within 30 minutes the past month	Pittsburgh Sleep Quality Index: Cannot get to sleep within 30 minutes the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: cannot get to sleep within 30 mins? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5b Pittsburgh Sleep Quality Index: Wake in the middle or night or early morning the past month	Pittsburgh Sleep Quality Index: Wake in the middle or night or early morning the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Wake up in the middle of the night or early morning? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5c Pittsburgh Sleep Quality Index: Have to get up to use the bathroom the past month	Pittsburgh Sleep Quality Index: Have to get up to use the bathroom the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Have to get up to use the bathroom? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5d Pittsburgh Sleep Quality Index: Cannot breathe comfortably during sleep the past month	Pittsburgh Sleep Quality Index: Cannot breathe comfortably during sleep the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Cannot breathe comfortably? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5e Pittsburgh Sleep Quality Index: Cough or snore loudly during sleep the past month	Pittsburgh Sleep Quality Index: Cough or snore loudly during sleep the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Cough or snore loudly? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5f Pittsburgh Sleep Quality Index: Feel too cold during sleep the past month	Pittsburgh Sleep Quality Index: Feel too cold during sleep the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Feel too cold? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5g Pittsburgh Sleep Quality Index: Feel too hot during sleep the past month	Pittsburgh Sleep Quality Index: Feel too hot during sleep the past month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Feel too hot? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5h Pittsburgh Sleep Quality Index: Have bad dreams during sleep last month	Pittsburgh Sleep Quality Index: Have bad dreams during sleep last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Have bad dreams? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5i Pittsburgh Sleep Quality Index: Have pain during sleep last month	Pittsburgh Sleep Quality Index: Have pain during sleep last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Have pain? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_5j Pittsburgh Sleep Quality Index: Other reasons for trouble sleeping last month	Pittsburgh Sleep Quality Index: Other reasons for trouble sleeping last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble sleeping because you: Other reason(s), please describe (select not during the past month if no other reasons apply) Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_6 Pittsburgh Sleep Quality Index: How often taken prescribed medicine to help with sleep last month	Pittsburgh Sleep Quality Index: How often taken prescribed medicine to help with sleep last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_7 Pittsburgh Sleep Quality Index: Trouble staying awake while driving, eating, or engaging socially last month	Pittsburgh Sleep Quality Index: Trouble staying awake while driving, eating, or engaging socially last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 had trouble staying awake while driving, eating meals, or engaging in social activity? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_8 Pittsburgh Sleep Quality Index: Problem to keep up enthusiasm to get things done last month	Pittsburgh Sleep Quality Index: Problem to keep up enthusiasm to get things done last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 much of a problem has it been for you to keep up enough enthusiasm to get things done? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_9 Pittsburgh Sleep Quality Index: Rate overall sleep quality last month	Pittsburgh Sleep Quality Index: Rate overall sleep quality last month Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Original 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 would you rate your sleep quality overall? Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c1 Pittsburgh Sleep Quality Index: Subjective sleep quality component subscore	Pittsburgh Sleep Quality Index: Subjective sleep quality component subscore Subscore based on 1 item from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_9	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c2 Pittsburgh Sleep Quality Index: Sleep latency component subscore	Pittsburgh Sleep Quality Index: Sleep latency component subscore Subscore based on 2 items from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_2 , psqi_5a	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c3 Pittsburgh Sleep Quality Index: Sleep duration component subscore	Pittsburgh Sleep Quality Index: Sleep duration component subscore Subscore based on 1 item from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_4	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c4 Pittsburgh Sleep Quality Index: Habitual sleep efficiency component subscore	Pittsburgh Sleep Quality Index: Habitual sleep efficiency component subscore Subscore based on 3 items from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_1, psqi_3, psqi_4	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c5 Pittsburgh Sleep Quality Index: Sleep disturbances component subscore	Pittsburgh Sleep Quality Index: Sleep disturbances component subscore Subscore based on 9 items from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_5b, psqi_5c, psqi_5d, psqi_5e, psqi_5f, psqi_5g, psqi_5h, psqi_5i, psqi_5j	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c6 Pittsburgh Sleep Quality Index: Use of sleeping medication component subscore	Pittsburgh Sleep Quality Index: Use of sleeping medication component subscore Subscore based on 1 item from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_6	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_c7 Pittsburgh Sleep Quality Index: Daytime dysfunction component subscore	Pittsburgh Sleep Quality Index: Daytime dysfunction component subscore Subscore based on 2 items from Pittsburgh Sleep Quality Index, with a range of 0-3. A score of "0" indicates no difficulty, while a score of "3" indicates severe difficulty. Buysse et. al 1989 (PubMed ID: 2748771) External semantic reference: CDE Search for all PSQI variables within this dataset Source: psqi_7, psqi_8	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	psqi_total Pittsburgh Sleep Quality Index: Total (Global) Score	Pittsburgh Sleep Quality Index: Total (Global) Score Summary score for the Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) Seven component scores are derived, from 0 (no difficulty) to 3 (severe difficulty). The global score is the sum of the seven components (0 to 21), while higher scores indicate worse sleep quality. External semantic reference: CDE Search for all PSQI variables within this dataset	Sleep Questionnaires/Sleep Habits/Pittsburgh Sleep Quality Index (PSQI)
	brisc_1 Brief Index of Sleep Control: How much control do you have over when you go to sleep?	Brief Index of Sleep Control: How much control do you have over when you go to sleep? Item from the Brief Index of Sleep Control (BRISC) Gardner et al 2020 (PMID: 32482573) Search for all Brief Index of Sleep Control (BRISC) variables within this dataset	Sleep Questionnaires/Sleep Habits/The Brief Index of Sleep Control (BRISC)
	brisc_2 Brief Index of Sleep Control: How much control do you have over when you wake up?	Brief Index of Sleep Control: How much control do you have over when you wake up? Item from the Brief Index of Sleep Control (BRISC) Gardner et al 2020 (PMID: 32482573) Search for all Brief Index of Sleep Control (BRISC) variables within this dataset	Sleep Questionnaires/Sleep Habits/The Brief Index of Sleep Control (BRISC)
	brisc_3 Brief Index of Sleep Control: How much control do you have over how much you sleep?	Brief Index of Sleep Control: How much control do you have over how much you sleep? Item from the Brief Index of Sleep Control (BRISC) Gardner et al 2020 (PMID: 32482573) Search for all Brief Index of Sleep Control (BRISC) variables within this dataset	Sleep Questionnaires/Sleep Habits/The Brief Index of Sleep Control (BRISC)
	brisc_4 Brief Index of Sleep Control: How much control do you have over how well you sleep?	Brief Index of Sleep Control: How much control do you have over how well you sleep? Item from the Brief Index of Sleep Control (BRISC) Gardner et al 2020 (PMID: 32482573) Search for all Brief Index of Sleep Control (BRISC) variables within this dataset	Sleep Questionnaires/Sleep Habits/The Brief Index of Sleep Control (BRISC)
	brisc_total Brief Index of Sleep Control: Total score	Brief Index of Sleep Control: Total score Total from the Brief Index of Sleep Control (BRISC), computed by taking the mean of all 4 items, greater scores indicate more control (range of 0-4). Gardner et al 2020 (PMID: 32482573) Search for all Brief Index of Sleep Control (BRISC) variables within this dataset	Sleep Questionnaires/Sleep Habits/The Brief Index of Sleep Control (BRISC)