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caffeine under Lifestyle and Behavioral Health in HEARTBEAT variables
In the last month, how often did you drink beverages containing caffeine (cola, coffee, tea, etc.)?
soclhx_0901 under Lifestyle and Behavioral Health in STAGES variables
How many servings of caffeine do you typically have in one day? (one serving equals 8oz. of coffee, 8oz. of tea, 12oz of soda, 12oz energy drink) I rarely or never drink caffeine
nap1_caffeine_yn under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset
nap2_caffeine_yn under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset
nap3_caffeine_yn under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset
nap4_caffeine_yn under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset
nap5_caffeine_yn under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset
soclhx_0900 under Lifestyle and Behavioral Health in STAGES variables
How many servings of caffeine do you typically have in one day? (one serving equals 8oz. of coffee, 8oz. of tea, 12oz of soda, 12oz energy drink)
caffeine under Lifestyle and Behavioral Health in WSC variables
cans_cola under Lifestyle and Behavioral Health in WSC variables
How many cans of cola or other soft drinks, with caffeine, do you usually drink in a typical day? Modified in 2012: Energy drinks was added.
cups_coffee under Lifestyle and Behavioral Health in WSC variables
How many cups of coffee or tea, with caffeine, do you usually drink in a typical day?
postcoffee under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009). Will you be able to go until 4pm today without caffeine or smoking 30 min prior to each nap? Search for all Multiple Sleep Latency Test variables within this dataset
soda15 under Lifestyle and Behavioral Health/SHHS1 in SHHS variables
How many cups/glasses of cola/soda (with caffeine) do you drink on a regular day? (Number of cups/glasses of soda, up to 2 digits)
ms210a under Sleep Monitoring/Polysomnography/Evening and Morning Survey/SHHS2 in SHHS variables
How many of the following drinks with caffeine did you have during the 4 hours before you went to sleep last night? (Please write "0" if you did not drink any of that beverage.) a. ____ cups of regular coffee (with caffeine)
ms210b under Sleep Monitoring/Polysomnography/Evening and Morning Survey/SHHS2 in SHHS variables
How many of the following drinks with caffeine did you have during the 4 hours before you went to sleep last night? (Please write "0" if you did not drink any of that beverage.) b. ____ cups of tea (with caffeine)
ms210c under Sleep Monitoring/Polysomnography/Evening and Morning Survey/SHHS2 in SHHS variables
How many of the following drinks with caffeine did you have during the 4 hours before you went to sleep last night? (Please write "0" if you did not drink any of that beverage.) c. ____ glasses or cans of cola or other soda (with caffeine)
cafbevad under Lifestyle and Behavioral Health in CFS variables
caffeine under Sleep Monitoring/Polysomnography/Evening and Morning Survey in CFS variables
soclhx_1000 under Lifestyle and Behavioral Health in STAGES variables
What time of day do you consume your last caffeinated drink?
caffeine_intake under Lifestyle and Behavioral Health in HCHS variables
nap1_caffeine_cups under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables
Clinical MSLT only Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).Search for all Multiple Sleep Latency Test variables within this dataset