ID of scientist.
Is tenured?
Scientist is female?
Years in rank.
Years in rank squared.
Selectivity of bachelor's institution.
Total number of articles.
Prestige of department.
Prestige is 4 or higher?
Is male?
male*year
male*yearsq
male*select
male*articles
male*prestige
male*presthi
female*year
female*yearsq
female*select
female*articles
female*prestige
female*presthi
Sample used in Allison SMR 1999 paper.