SleepStudy: Sleep Study

Description

Data from a study of sleep patterns for college students.

Arguments

Format

A dataset with 253 observations on the following 27 variables.

`Gender`	1=male, 0=female
`ClassYear`	Year in school, 1=first year, ..., 4=senior
`LarkOwl`	Early riser or night owl? `Lark`, `Neither`, or `Owl`
`NumEarlyClass`	Number of classes per week before 9 am
`EarlyClass`	Indicator for any early classes
`GPA`	Grade point average (0-4 scale)
`ClassesMissed`	Number of classes missed in a semester
`CognitionZscore`	Z-score on a test of cognitive skills
`PoorSleepQuality`	Measure of sleep quality (higher values are poorer sleep)
`DepressionScore`	Measure of degree of depression
`AnxietyScore`	Measure of amount of anxiety
`StressScore`	Measure of amount of stress
`DepressionStatus`	Coded depression score: `normal`, `moderate`, or `severe`
`AnxietyStatus`	Coded anxiety score: `normal`, `moderate`, or `severe`
`Stress`	Coded stress score: `normal` or `high`
`DASScore`	Combined score for depression, anxiety and stress
`Happiness`	Measure of degree of happiness
`AlcoholUse`	Self-reported: `Abstain`, `Light`, `Moderate`, or `Heavy`
`Drinks`	Number of alcoholic drinks per week
`WeekdayBed`	Average weekday bedtime (24.0=midnight)
`WeekdayRise`	Average weekday rise time (8.0=8 am)
`WeekdaySleep`	Average hours of sleep on weekdays
`WeekendBed`	Average weekend bedtime (24.0=midnight)
`WeekendRise`	Average weekend rise time (8.0=8 am)
`WeekendSleep`	Average weekend bedtime (24.0=midnight)
`AverageSleep`	Average hours of sleep for all days
`AllNighter`	Had an all-nighter this semester? 1=yes, 0=no

Details

The data were obtained from a sample of students who did skills tests to measure cognitive function, completed a survey that asked many questions about attitudes and habits, and kept a sleep diary to record time and quality of sleep over a two week period.