Related Variables

cans_cola	Caffeine intake - soft drinks per day 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.	Lifestyle and Behavioral Health
cups_coffee	Caffeine intake, number of cups of coffee or tea per day How many cups of coffee or tea, with caffeine, do you usually drink in a typical day?	Lifestyle and Behavioral Health
nap1_caffeine_yn	MSLT: Drank Caffeine prior to Nap 1 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)
nap2_caffeine_yn	MSLT: Drank Caffeine prior to Nap 2 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)
nap3_caffeine_yn	MSLT: Drank Caffeine prior to Nap 3 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)
nap4_caffeine_yn	MSLT: Drank Caffeine prior to Nap 4 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)
nap5_caffeine_yn	MSLT: Drank Caffeine prior to Nap 5 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)
postcoffee	MSLT: Capacity to go until 4pm without caffeine or smoking 30 min prior to each nap 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	Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT)

Wisconsin Sleep Cohort

Related Variables