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I
had the great pleasure of presenting the Presidential Address
for Section II at APA in August. I was asked to provide a brief
overview of the talk for this newsletter, and that effort follows
these introductory remarks. Many of us also discussed the idea
that it would be worthwhile to attempt to publish full versions
of the Presidential addresses, every year, in the Division 12
journal, Clinical Psychology" Science and Practice. I do
plan to prepare a complete version to submit to that journal,
and I hope that former and future Presidents of Section II will
do likewise. In the meantime, if any Section members would like
a full copy of the text of my talk, feel free to be in touch with
me at tmz@icon.palo-alto.med.va.gov.
I
examined three inter-related points in this talk: First, since
the mental health problems of older adults are often interwoven
inextricably with other changes in health and function, the best
care for older adults is offered by Interdisciplinary teams, comprised
of representatives of multiple professions working collaboratively
to plan, implement, and evaluate the outcomes of health care.
Second, the Interdisciplinary team model of care is becoming the
standard for care throughout the health care system, not just
for older adults. Third, as teams become the standard of care,
Clinical Geropsychologists are poised to become leaders in teaching
about their benefits and challenges, because of the experience
we have in using this model and making it work. I attempted to
address these issues by 1) examining some lessons learned from
care of older adults, 2) laying out basic principles of interprofessional
team work, 3) pointing out signs of this model of care's increasing
importance, and 4) suggesting an agenda for Section II members
and other conference attendees to enhance their abilities to work
effectively in interprofessional settings and to share their understanding
of such work with others.
I
began by claiming that the mental health problems of older adults
are often interwoven with other changes in health and function.
There are many ways to explore that assertion. Rather than doing
an exhaustive literature review, I will present examples of such
relationships from some of my own research in two different areas:
depression in older adults and sexual dysfunction in older adults.
In recently published work with my mentor, Peter Lewinsohn, and
colleagues at the Oregon Research Institute (Zeiss et al., 1996),
we examined the relationships among physical disease, functional
impairment, and the onset of depression in community dwelling
older adults. Considerable prior research has demonstrated a statistical
relationship at single points in time between the presence of
physical illness and depression in older adults. The meaning of
this relationship, however, has not been clear. Is disease a risk
factor for depression (the most common interpretation)? Or is
depression a risk factor for becoming or remaining physically
ill (as others argue)? And if illness is a risk factor for depression,
what is the causal agent in that relationship?
Based
on experience working with older adults, I hypothesized that impairment
in independent function, such as loss of ability for self-care,
recreational activities, mobility, hearing or vision, would be
the actual risk factor for depression. Older adults are more likely
to lose function when they have physical illness, accounting for
the observed relationship between disease and depression. However,
we argued that illness in the absence of impairment should not
be a risk factor for depression.
We
tested these hypotheses in a sample of 680 older adults who were
not depressed when initially interviewed and who were followed
over a period up to four years. Four groups were differentiated:
healthy, without impairment of function; physical ill without
impairment of function; healthy, with loss of function; physically
ill, with loss of function.
Survival
curve analysis revealed that functional impairment carried the
day in predicting depression. The two groups who had lost some
aspects of independent function were significantly more likely
to develop an episode of major depressive disorder. The two groups
without functional impairment developed the lowest rates of depression.
In addition, loss of function had an incremental relationship
to the likelihood of becoming depressed: the greater the level
of impairment, the higher the likelihood of becoming depressed.
There was no such relationship for number of diagnosed illnesses.
However, a minority of all of the older adults in this study never
became depressed, even when faced with physical disease and loss
of function. For instance, in the most at risk group, those who
had loss of function without current disease, over 70% never became
depressed during the follow-up period. These findings fit repeated
research demonstrations that adults who live to old age are particularly
hardy people, with a lower incidence of onset of new depression
than almost any other age group.
Another
strand is also emerging from the Oregon Research Institute data
set. We are exploring a conceptually different issue one
usually called the "continuity hypothesis" of depression.
This question explores whether diagnosable depression is best
thought of as falling on a continuum with limited depressive symptoms
or whether it represents a categorically distinct category, as
using the diagnostic approach of DSMIV directs us.
To
approach this question we used the full sample (N = 1,005) from
which the earlier set of adults not depressed at initial interview
were selected. For this research, we divided this sample into
five groups: one group meeting criteria for Major Depressive Disorder
and four subgroups of those not meeting criteria; the four subgroups
are based on the level of depressive symptoms reported on the
CES-D: low (0-5), slight (6-10), moderate (11-15), and high (16
or greater). The sample was also divided into five groups based
on the number of clinical symptoms reported during a diagnostic
interview: 0, one, two or three, four, and those meeting full
MDD diagnostic criteria.
Data
on a broad spectrum of measures covering psychological and social
functioning: major and minor stressors, social support and social
interaction, life satisfaction, pleasant activities, self-esteem,
social skills, coping skills, cognitive functioning, behavior
problems, and emotional reliance on others were examined in relation
to the five groups. Note that in this study, we are still interested
in how the mental health problems of older adults are interwoven
with other changes in health and function, but this time we are
looking at psychosocial health and function, not physical health
and function.
Discriminant
function analysis was used to examine the relationships between
psychosocial variables and depression status using the five groups
described above. One significant discriminant function was extracted,
accounting for 87% of the variance among the groups based on CES-D
scores and 88% of the variance based on diagnostic symptoms. To
test the continuity hypothesis, we examined mean scores on the
discriminant function for each of the five groups. The significant
discriminant function tells us that the groups differ in some
way, but the important question is whether older adults diagnosed
with depression differ dramatically from older adults in all the
other groups, or whether there is a continuous, gradual increase
in discriminant function scores, with no meaningful break point
when comparing diagnosed individuals with others.
The
data support the continuity hypothesis fairly clearly. There is
a gradual, continuous and very statistically significant increase
in discriminant function score across the five groups. This is
true when examining the CES-D criterion or the groups based on
symptoms (full data can be reviewed in a forthcoming publication,
Lewinsohn et al., in press).
While
emphasis was on testing the continuity hypothesis, the data just
as clearly bear witness to the assertion that older adults who
are depressed also carry a diversity of other problems in psychosocial
functioning. In addition, the more depressed the older adult,
the more other problems are also present, suggesting that those
individuals who do end up seeking help may need more than what
psychotherapy alone can offer. Specifically, they may need the
complex, interwoven services of an Interdisciplinary team.
So
far so good, but there is one caveat, and it's related to another
of my opening assertions: the Interdisciplinary team model of
care is becoming the standard for care throughout the health care
system, not just for older adults. The caveat in this study,
we also examined two other samples, one of adolescents and the
other of mid-life adults. We found exactly the same patterns in
both those samples: first, continuity across a range of increasing
depressive symptoms; second, a single discriminant function emerging
that included all the psychosocial function measures. Put simply,
the mental health problems of adolescents and younger adults seem
to be interwoven with other changes in health and function too
and they may need Interdisciplinary team care just as much
as older adults do.
A
final example of interrelationships among problems in older adults
is based on much simpler research we have conducted for about
15 years on sexual problems in older adults, in the context of
an Interdisciplinary clinic at VA Palo Alto, the Andrology Clinic.
Our typical patients are older adults (although we see the full
adult age spectrum); they are usually male; and they usually present
with erection problems (and often other sexual problems as well).
In
the literature on erection problems, it is common to see statements
of the following type: "We used to think that most erection
problems were caused by psychological factors, but now we know
that most erection problems are a result of medical causes."
The statement is usually offered by a physician and I have never
seen it paired with supportive data. We have collected data on
the causes we can identify in our patients, based on the results
of a medical history and physical exam, lab tests of endocrine
function, nocturnal erection testing, and a semi-structured psychosocial
interview examining emotional and interpersonal issues. We have
reviewed data on multiple occasions, with a total sample now approaching
2,000 patients.
Among
our clearest results is a finding replicated in each data review:
80% of our patients report medical problems that would be sufficient
to cause the presenting problem with erections just like
the popular claim. However, it is also true that 80% of our patients
have psychosocial problems that would be sufficient to cause the
presenting erection problem. Thus, if we functioned solely as
a psychosocial clinic, we would be convinced that the primary
etiology of erection problems is emotional and interpersonal difficulties.
If we functioned solely as a medical clinic, we would be equally
convinced that the primary etiology of erection problems is medical
illness and/or medications. Since we function as an Interdisciplinary
clinic, we understand that both things can be true at once, and
that we will serve our patients best by not sorting them into
"psychogenic" vs. "biogenic" causation, but
instead by recognizing the full range of problems they have and
designing treatment that is responsive to all their concerns.
And,
just as with my last example, this is not only true for older
adults. It may be more likely that an older adult will develop
medical problems that contribute to sexual dysfunction, but any
patient, presenting at any age, with a sexual concern may be best
served by receiving assessment and treatment from an Interdisciplinary
team. And we who are Clinical Geropsychologists know how to do
that.
In
fact, our knowledge is embedded in the Standards for Proficiency
in Clinical Geropsychology, which recognizes the importance of
coordinated care with the following: "Interdisciplinary team
approaches and, even in the private practice setting, coordination
of services are key ingredients in the care of elderly patients.
. . .Clinical geropsychologists must be knowledgeable about the
services available from other disciplines, educate others as to
skills and role of the geropsychologist, and continually show
an ability to collaborate effectively with other professionals."
A
lot of meaning is packed in those few words. To say that a group
of health care providers is a "team" says very little.
A group that is a team shares a common work-place and set of patients,
but teams differ on many dimensions (Zeiss & Steffen, 1998).
To clarify, I will briefly contrast two kinds of teams: Interdisciplinary
vs. multidisciplinary.
Interdisciplinary
teams are composed of members from more than one profession, making
a breadth of resources available to patients. Interdisciplinary
teams work collaboratively. On an Interdisciplinary team, the
group as a whole takes responsibility for program effectiveness
and team function. Leadership functions are shared among members;
all team members are assumed to be colleagues; and there is no
hierarchical team organization.
Individual
team members work out overall strategies for assessment and share
information to generate a conceptualization of the relationships
among biological, psychological, and social aspects of the case.
This approach goes by the awkward but useful title, the "biopsychosocial"
model. That conceptualization is used to formulate shared team
goals and to plan how team members will work together. Team members
implement the plan, either individually or collaboratively as
necessary, and evaluate progress. Those evaluations become new
assessment data, which are brought back to the team to revise
goals or strategies for reaching them. This process is repeated
as often as necessary until goals are achieved.
Role
maps are helpful for understanding the contributions of each team
member. In such maps, an oval appears for each profession on the
team, indicating the skills and responsibilities of that profession
in providing care for patients served by the team; each oval overlaps
with others. Within each discipline's oval are listed the components
of their role. In the unique, non-overlapping part of each oval
appear clinical responsibilities assumed only by that discipline.
In areas of overlap, clinical responsibilities appear that either
discipline might perform or that two team members might perform
as co-therapists. There might also be areas where three ovals
overlap. In those intersections appear tasks which several team
members might perform; for example, on some teams, Nursing, Medicine,
or Psychology might all perform cognitive screening. Team role
maps provide several kinds of information. They delineate services
patients could receive from the team; they clarify what each discipline
will provide to the team; they clarify opportunities for conjoint
efforts or, in a poorly-functioning team, sources of conflict
known as "turf battles;" and they suggest which disciplines may
have the most difficulty speaking each other's language.
For
contrast, consider how a Multidisciplinary team functions; the
term Multidisciplinary is often used as if it were synonymous
with Interdisciplinary, but they differ in crucial ways. A multidisciplinary
team also has members from more than one discipline, but here
each discipline does its own assessment, generates its own treatment
plan, implements the plan, evaluates progress, and refines the
plan based on its own evaluation. Team members share information
with each other, but there is no attempt to generate or implement
a common plan.
Multidisciplinary
teams are hierarchically organized: there is a designated program
"Chief", who is usually the highest-ranking professional (commonly
an M.D.). That leader is responsible to oversee the program, chair
meetings, resolve conflicts, and allocate case load - whether
they have the requisite skills or not. Other team members feel
responsible only for the clinical work of their own discipline;
unlike Interdisciplinary team members, they need not share a sense
of responsibility for program function and team effectiveness.
When
used in appropriate settings, well-functioning Interdisciplinary
Teams provide cost-effective care. First, Interdisciplinary teams
generate more comprehensive and creative interventions, since
the ideas and knowledge of a group can be brought to bear, and
team members can stimulate each other's ideas. Second, problems
don't fall through the cracks. Third, Interdisciplinary teams
reduce duplication of services compared to Multidisciplinary teams.
Fourth, team members do not provide conflicting information or
interventions to the patient. Finally, Interdisciplinary teams
can reduce institutional costs, because they increase staff morale
and reduce staff turnover.
While
there is a need for more research to examine each of the elements
of this argument, the evidence available does support the cost-effectiveness
of the Interdisciplinary team approach. I was actually delighted
in preparing this talk to discover a growing, solid body of evidence
supporting the effectiveness of interdisciplinary team care –
much greater than just 2 years ago when I gave a previous version
of this talk. Full references and information are available in
the longer report.
Interdisciplinary
teams have been the standard of care for geriatric settings since
the early 1980s. They also have been used in pediatric care, rehabilitation,
and some mental health settings, especially inpatient programs.
In the 1990s, this model of care began to expand dramatically,
and one of my basic contentions is that it is becoming a common
standard of care, as the review of recent literature on team care
outcomes also suggests. Clinical Geropsychologists are in a special
position to take a leading role in offering guidance about this
system of health care and how to make it work.
In
the United States, this shift has occurred most dramatically in
the movement to primary care. Primary care has been conceptualized
as intrinsically Interdisciplinary in nature. APA recognized this,
and recently produced a task force document to underscore the
importance of this shift for the future of psychology training:
that document is titled, "Interprofessional Health Care Service
in Primary Care Settings: Implications for the Education and Training
of Psychologists."
There
also has been a growing international awareness of the role of
Interdisciplinary care. A Select Committee of the Council of Europe
recommended "the provision of joint professional education as
a means of improving teamwork in cancer care. . . " (Jones, 1992).
The European Health Committee has funded a review of Interdisciplinary
training of health care staff in member states, and Interdisciplinary
training modules are available in countries throughout Europe.
Other countries around the world are using Interdisciplinary health
care concepts; a literature review of who is publishing about
model programs or research outcomes using teams included references
from Belgium, Brazil, Canada, China (Hong Kong), England, Finland,
France, Germany, Greece, Ireland, Israel, Italy, Netherlands,
Norway, Romania, Scotland, South Africa, Sweden, Switzerland,
and the United States.
The
growing importance of the Interdisciplinary care model is recognized
and embedded in the 1995 report of the Pew Health Professions
Commission. This group has the mission of assisting policy makers
and educational institutions to produce health care workers who
meet the changing needs of the American health care system. The
1995 report provided a sweeping overview of fundamental changes
in American health care. Elements related to team care are expressed
strongly in this report.
The
Department of Veterans Affairs plays a role in the training of
over half of all health care professionals in the United States.
In the early 1990s, VA's model of care shifted from tertiary hospital
care to primary care offered through Interdisciplinary settings.
A large portion of VA's training budget was re-allocated in 1993
to the PRIME program, which funds a full spectrum of health care
providers in Interdisciplinary primary care settings. More recently,
a VA task force re-examined all funding for associated health
professional training. That task force generated a proposal, in
which there is a clear commitment that ALL VA training of associated
health professionals should be guided by an Interdisciplinary
model. The proposed trainee allocation methodology includes two
principles that are key in this context: education should reflect
clinical practice realities, and training programs should demonstrate
Interdisciplinary strategies and collaboration. Working out implementation
of this proposal is still occurring, but eventually, every request
for VA funding for psychology interns, social work interns, etc.
is likely to need to be supported by a plan describing the nature
and extent of Interdisciplinary training to be provided.
At
the start of this talk, I argued that the Interdisciplinary team
model of care is becoming the standard of care not only for older
adults, but throughout the health care system, and I have presented
evidence to support that contention. However, I also know that
many parts of the health care system are having difficulty trying
to make this real. Twenty years ago, there was more talk than
action in geriatric settings, too; now interdisciplinary care
is commonly implemented, often extremely effectively, in geriatric
programs. In the process of getting from the point of seeing what
needed to be done to actually knowing how to do it, we have learned
a lot. I want to turn now, briefly, to recommendations for how
Clinical Geropsychologists could share what we have learned along
the way and help other parts of the health care system develop
expertise for interdisciplinary work.
If
you work in an organized health care setting, you are probably
observing colleagues trying to deal with the shift to Interdisciplinary
care. I urge you to be leaders in that process. Let your colleagues
know about skills you have that can help in team development and
improved collaborative process - for example, providing assertion
training to help all team members express themselves effectively;
training in conflict resolution; or training in problem-solving
skills applied to a group setting. Tell people about your experiences
with teams and ways you have found to solve problems and promote
commitment to a collaborative model.
Academic
programs in psychology are not changing fast enough to prepare
therapists and researchers for the transformed world of health
care. Too often, psychology's educational models are grounded
in single discipline care and an outdated assumption that the
health care system will be made up of tertiary care hospitals
and private practice offices. The Pew Commission recommendations
should be implemented by academic leaders by including these components
in all clinical and counseling graduate training. Clinical Geropsychologists
are the faculty most likely to have already implemented such concepts
in their curricula, syllabi, and practicum experiences. I hope
you will have even more impact on your colleagues in Psychology
Departments, so that these concepts become fundamental to clinical
training across the life-span. I assure you it would make it much
easier for your students when they arrive at internship sites,
whether they are working with older adults or with other parts
of the age spectrum.
In addition, research opportunities in Interdisciplinary care
abound. While a wonderfully expanding set of data support Interdisciplinary
teams, major questions remain to be explored. What are the best
methods for developing productive teams? How do we assess the
level of coordination in team care? Which patients benefit the
most from Interdisciplinary care? What are the components of care
that are basic and essential to positive outcomes? These are questions
for which Clinical Geropsychologists may have an edge in hypothesis
formulation, research design, and knowing which treatment approaches
are best included in the team repertoire.
As
our Standards for Proficiency recognize, Clinical Geropsychologists
in private practice seek to develop Interdisciplinary linkages
that function as "virtual teams," in which there can be coordinated
attention to the various aspects of the biopsychosocial model.
Those in this role can be leaders in showing other private practitioners
how to develop such collaborative interactions, thus encouraging
coordination of the services clients receive in formerly disconnected
parts of the health care network.
The
best summary of the Interdisciplinary team philosophy is one I
heard years ago "People support what they help create". Interdisciplinary
teams come about through the efforts of health care professionals
who challenge each other, learn from each other, and rely on each
other. Interdisciplinary teams depend on the wise and creative
integration of diverse viewpoints. Sometimes those are complementary,
but sometimes they are conflicting. Teams must value diversity,
remain cohesive when viewpoints conflict, and negotiate agreement
to which all team members are committed.
I
heard some other wise advice even earlier than I learned that
"people support what they help create." One of my graduate school
faculty told me, "Students try to be special by being smart, but
there are lots of smart students. The ones who really matter are
the ones who are generous with their smartness." I would like
to pass that on and invite all of us who are Clinical Geropsychologists
to be generous right now with our smartness about interdisciplinary
team work. There are a lot of struggling health care providers
out there who could use it.
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