Depression 291
screening, routine follow-up care, interdisciplinary teams, and, in some studies, a
designated staff member (i.e., depression care manager) to manage the patients’
depression treatment and interactions with service providers (Austin et al., 2000;
Oxman et al., 2003). Systematic reviews have supported the effectiveness of dis-
ease management programs for treating depression in adults (Badamgarav et al.,
2003; Neumeyer-Gromen, Lampert, Stark, & Kallischnigg, 2004).
In late-life depression treatment, these disease management programs have
also become known as collaborative care models. Several randomized controlled
trials of various collaborative care components have demonstrated the usefulness
of providing accessible and effective treatment in a variety of settings, such as in
primary care settings (Boult et al., 2001; Bruce et al., 2004; Oslin et al., 2003; Un-
utzer et al., 2001), hospitals (Oslin et al., 2004; Shah, Odutoye, & De, 2001), com-
munity senior services settings and public housing (Ciechanowski et al., 2004;
Rabins et al., 2000), and home health care (Blanchard, Watereus, & Mann, 1999).
Furthermore, several of these studies demonstrated positive outcomes associated
with collaborative care treatment, decreased depression severity and symptoma-
tology (Boult et al., 2001; Bruce et al., 2004; Ciechanowski et al., 2004; Rabins
et al., 2000; Unutzer, Katon, et al., 2002), and decreased functional impairment
(Boult et al., 2001; Ciechanowski et al., 2004; Unutzer, Katon, et al., 2002).
In general, these studies vary in the different collaborative components in-
cluded, but they typically involved a nurse or social worker acting as a dedicated
depression care manager with psychiatric clinical supervision, a stepped-care al-
gorithm, and a systematic tracking system to assess depression severity. As this
is a multifaceted approach that incorporates several evidence-based intervention
components, what constitutes required features is still being debated. In particu-
lar, the depression care manager has been highlighted as a key element for future
research to clarify the practicality and fiscal feasibility of transferring this inter-
vention to practice settings (Oxman et al., 2003).
To further exemplify the strengths of collaborative care, it is helpful to discuss
one prominent study. Unützer, Katon, et al. (2002) report on a multisite study
basedinprimarycarecalledIMPACT.TheIMPACTstudyusedaspecificcollabo-
rative care model to integrate evidence-based depression treatments into primary
care clinics. This collaborative care model used a depression care manager to:
• Conduct systematic assessments using standardized depression screens.
• Educate older adults about depression and prompt behavior activation.
• Provide brief psychotherapy using PST-PC.
• Facilitate consultation with primary care physicians and psychiatrists to
promote evidence-based medication management.
• Ensure follow-up to track depression outcomes, which would inform pa-
tient’s progression through the stepped-care treatment algorithm.
Several articles regarding IMPACT’s results report significant findings on the fol-
lowing outcomes: long-term decrease in depression severity and improved func-
tioning (Katon et al., 2002), improved arthritis outcomes and pain management
(Lin et al., 2003), improved diabetes management (Williams et al., 2004), de-
creased medical expenditures (Simon et al., 2001), and decreased racial and eth-
nic disparities in treatment outcomes (Areán, Gum, et al., 2005).