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Item from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

Item from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

Item from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

Item from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

Item from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

Total from the Disturbing Dream and Nightmare Severity Index (DDNSI) Search for all Disturbing Dream and Nightmare Severity Index variables within this dataset

How often, if ever, do you have any of the following problems sleeping? (Circle one response for each item.) Do you have nightmares or disturbing dreams?

... as self-reported insomnia severity, nightmare severity, sleep duration, time ...

Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) Search for all PSQI variables within this dataset

Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771) Search for all PSQI variables within this datasetOriginal question: During the past month, how often have you had trouble sleeping because you have bad dreams?

How often do you have nightmares (frightening dreams)? Times

How often do you have nightmares (frightening dreams)? Never or don't know

How often do you have nightmares (frightening dreams)? Per night/week/month/year

Item from the Sleep Disorders Symptom Checklist - 25. Klingman et al 2017, Introducing the Sleep Disorders Symptom Checklist-25: A Primary Care Friendly and Comprehensive Screener for Sleep Disorders, Sleep Med Res 2017; 8(1): 17-25Search for all Sleep Disorders Symptom Checklist - 25 variables within this dataset

Item from the Sleep Disorders Symptom Checklist - 25. Klingman et al 2017, Introducing the Sleep Disorders Symptom Checklist-25: A Primary Care Friendly and Comprehensive Screener for Sleep Disorders, Sleep Med Res 2017; 8(1): 17-25Search for all Sleep Disorders Symptom Checklist - 25 variables within this dataset

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 had trouble sleeping because you: Have bad dreams? Search for all PSQI variables within this dataset

Item from Pittsburgh Sleep Quality Index. Buysse et. al 1989 (PubMed ID: 2748771)External semantic reference: CDE Search for all PSQI variables within this dataset

Survey3: From mailed survey 3 (mailing year: :survey_year_s3:)Search for all questions from Sleep Problem questionare within this dataset

Survey1: From mailed survey 1 (mailing year: :survey_year_s1:)Option #5 was not offered as a separate option for the Agency 1 participants. For them, Option #4 included the wording for both the later Options #4 AND #5 combined.Search for all questions from Sleep Problem questionare within this dataset

Survey2: From mailed survey 2 (mailing year: :survey_year_s2:)The original form was coded as 0-4, but has been recoded to 1- 5 to match all other occurrences of these variables (Survey 1, Survey 3).Search for all questions from Sleep Problem questionare within this dataset