SleepStudy {Lock5Data}

Sleep Study

Description

Data from a study of sleep patterns for college students.

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.

Source

Onyper, S., Thacher, P., Gilbert, J., Gradess, S., "Class Start Times, Sleep, and Academic Performance in College: A Path Analysis," April 2012; 29(3): 318-335. Thanks to the authors for supplying the data.