We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our Privacy Policy.

Search

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?
coffee15 under Lifestyle and Behavioral Health/SHHS1 in SHHS variables
How many cups of regular coffee do you drink on a regular day? (Number of cups of coffee, up to 2 digits)
precoffee 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). Did you have any coffee or other stimulants this am? Search for all Multiple Sleep Latency Test variables within this dataset
sh325 under Lifestyle and Behavioral Health/SHHS2 in SHHS variables
On a typical day, how many cups of regular coffee (with caffeine) do you drink?
coffee10 under Sleep Monitoring/Polysomnography/Evening and Morning Survey/SHHS1 in SHHS variables
How many cups of coffee (with caffeine) 4 hours before going to sleep last night? (number, 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)
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_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)
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
sqea21 under Sleep Questionnaires/Sleep Habits in HCHS variables
slh8 under Sleep Questionnaires/Sleep Habits in CHAT variables
Such as cola, coffee, tea, etc.
caffeine under Sleep Monitoring/Polysomnography/Evening and Morning Survey in CFS variables
caffeine under Lifestyle and Behavioral Health in WSC variables