Modern Approaches to Longitudinal Data Analysis

Modern Approaches to
Longitudinal Data Analysis
Brent J. Small, PhD
U
niv
e
r
s
i
ty
o
f
Sout
h Fl
o
ri
da,
T
a
m
pa,
FL
U e s ty o Sout o da, a pa,
Moffitt Cancer Center, Tampa, FL

Wefel JS, Vardy J, Ahles T, et al: International Cognition and Cancer Task Force recommendations to
harmonise studies of cognitive function in patients with cancer. The Lancet Oncology 12:703-708, 2011

These are Classic Issues
These
are
Classic
Issues
1. Identification of intraindividual change
2. Identification of interindividual differences in
intraindividual
change
intraindividual
change
3. Interrelationships in behavioral change
4. Causes of intraindividual change
5
Causes of
interindividual
differences in
5
.
Causes
of
interindividual
differences
in
intraindividual change
Baltes PB, Nesselroade JR: History and rationale of longitudinal research, in Nesselroade JR,
Baltes PB (eds): Longitudinal research in the study of behavior and development. New York, NY,
Academic Press, 1979, pp 1-39

Tailored to Cancer and Cognition
Tailored
to
Cancer
and
Cognition
1. Does cognitive performance change among
persons with cancer?
2.
Identification of
interindividual
differences in
2.
Identification
of
interindividual
differences
in
intraindividual change
3
Interrelationships in behavioral change
3
.
Interrelationships
in
behavioral
change
4. Causes of intraindividual change
5. Causes of interindividual differences in
intraindividual chan
g
e
g
Baltes PB, Nesselroade JR: History and rationale of longitudinal research, in Nesselroade JR,
Baltes PB (eds): Longitudinal research in the study of behavior and development. New York, NY,
Academic Press, 1979, pp 1-39

Tailored to Cancer and Cognition
Tailored
to
Cancer
and
Cognition
1. Does cognitive performance change among
persons with cancer?
2.
Is there variability in rate of change in
2.
Is
there
variability
in
rate
of
change
in
cognition across persons?
3
Interrelationships in behavioral change
3
.
Interrelationships
in
behavioral
change
4. Causes of intraindividual change
5. Causes of interindividual differences in
intraindividual chan
g
e
g
Baltes PB, Nesselroade JR: History and rationale of longitudinal research, in Nesselroade JR,
Baltes PB (eds): Longitudinal research in the study of behavior and development. New York, NY,
Academic Press, 1979, pp 1-39