age. in years
soph. =1 if sophomore
junior. =1 if junior
senior. =1 if senior
senior5. =1 if fifth year senior
male. =1 if male
campus. =1 if live on campus
business. =1 if business major
engineer. =1 if engineering major
colGPA. MSU GPA
hsGPA. high school GPA
ACT. 'achievement' score
job19. =1 if job <= 19 hours
job20. =1 if job >= 20 hours
drive. =1 if drive to campus
bike. =1 if bicycle to campus
walk. =1 if walk to campus
voluntr. =1 if do volunteer work
PC. =1 of pers computer at sch
greek. =1 if fraternity or sorority
car. =1 if own car
siblings. =1 if have siblings
bgfriend. =1 if boy- or girlfriend
clubs. =1 if belong to MSU club
skipped. avg lectures missed per week
alcohol. avg # days per week drink alc.
gradMI. =1 if Michigan high school
fathcoll. =1 if father college grad
mothcoll. =1 if mother college grad