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isi_total under Sleep Questionnaires/Sleep Disturbance/Insomnia Severity Index (ISI) in ANSWERS variables
Summary score for the Insomnia Severity Index. Morin (1993) Each item is scored from 0 to 4. Total score is the sum of all seven items (0 to 28), and catergorized as: absence of insomnia (0 to 7), sub-threshold insomnia (8 to 14), moderate insomnia (15 to 21), and severe insomnia (22 to 28). Search for all ISI variables within this dataset
isi_1 under Sleep Questionnaires/Sleep Disturbance/Insomnia Severity Index (ISI) in ANSWERS variables
Item from Insomnia Severity Index. Morin (1993)Original question: Please rate the following symptoms for the past two (2) weeks. -Difficulty falling asleep Search for all ISI variables within this dataset
isi_0100 under Sleep Questionnaires/Sleep Disturbance/Insomnia Severity Index (ISI) in STAGES variables
Item from Insomnia Severity Index. (Morin CM, Insomnia, psychological assessment and management. Guilford Press, New York, 1993)[https://pubmed.ncbi.nlm.nih.gov/21532953/] Search for all ISI variables within this dataset