General growth mixture modeling for randomized preventive interventions
شنبه , 23 شهریور 1392 ساعت 13:10 دسته بندی :دانلود مقاله :
General growth mixture modeling for randomized preventive interventions 2001
نویسندگان :
BENGT MUTH´EN C. HENDRICKS BROWN KATHERINE MASYN, BOOIL JO SIEK-TOON KHOO CHIH-CHIEN YANG
چکیده :
This paper proposes growth mixture modeling to assess intervention effects in longitudinal randomized
trials. Growth mixture modeling represents unobserved heterogeneity among the subjects using a finitemixture
random effects model. The methodology allows one to examine the impact of an intervention
on subgroups characterized by different types of growth trajectories. Such modeling is informative
when examining effects on populations that contain individuals who have normative growth as well as
non-normative growth. The analysis identifies subgroup membership and allows theory-based modeling
of intervention effects in the different subgroups. An example is presented concerning a randomized
intervention in Baltimore public schools aimed at reducing aggressive classroom behavior, where only
students who were initially more aggressive showed benefits from the intervention.
?> Growth modeling Latent variables Maximum likelihood Randomized trials Trajectory classes Treatment baseline interactionمطالب مرتبط :