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Assessing Nocturnal Sleep/Wake Effects on Risk of Suicide

Name Label Folder
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)