But
among the various
subgroups polled, no one was more supportive
of providing parents with options in the education
of their
child than parents with school - age
children.
The participation rate
of 90 is also required
among a number
of student
subgroups, such as minorities, students whose primary language is not English and
children in the foster care system.
For example, longitudinal prospective studies
of children of mothers with schizophrenia have consistently identified a
subgroup who present a stable pattern
of aggressive and / or antisocial behavior from a young age, 36,37 and studies
of children with depression identify a
subgroup with conduct disorder.38
Among persons who develop a major mental disorder, substance abuse in childhood or adolescence is more strongly associated with violent crime in adulthood than substance abuse in adulthood, 39 and individuals who will develop a major mental disorder may be more sensitive to the effects
of alcohol than others.40 These findings suggest that symptoms (eg, substance abuse) that we and others are labeling as distinct disorders, may in fact be a part
of or at least related to the primary disorder.
This method allowed us to identify separate
subgroups among children aged 2 to 5, and to estimate both the membership probability
of each trajectory and the effect
of predictors on it.