Columbia subject headings:
Multilevel models (Statistics)
Regression analysis.
Social sciences--Research--Mathematical models.
Harvard subject headings:
Econometrics
Epidemiology
Mathematical statistics
Multilevel models (Statistics)
Psychometrics
Regression analysis
Social sciences--Methodology
Social sciences--Research--Mathematical models.
Statistics
Princeton subject headings:
Multilevel models (Statistics)
Social sciences--Research--Mathematical models.