In 2016, the U.S. Preventive Services Task Force (USPSTF) updated its recommendations to include routine screening for depression of the general adult population, pregnant and postpartum women (Siu, 2016). There was moderate evidence that screening pregnant and postpartum women reduced depression prevalence and increased remission and treatment response even in the absence of additional treatment supports. Outcomes were better with such supports. There was low to moderate evidence showing the same for the general adult primary care population but insufficient evidence to show benefit in older adults. They concluded that generalizing from evidence in all adults to older adults may be reasonable (O’Connor, 2016). Furthermore, the American College of Preventive Medicine (ACPM) supports this recommendation and adds that all primary care practices should have such systems of care in place (Nimalasuriya, 2009). Given that the outcomes are better when reliable systems and supports are put in place to diagnose, follow-up and modify treatment as needed, this guideline will be highlighting evidence-based, effective ways to implement such supports (O’Connor, 2016).
A reasonable way to evaluate whether a system is successfully functioning in its diagnosis, treatment and follow-up of major depression would be to consider the following:
Importance of Major Depression Focus in Primary Care
Major depression is a treatable cause of pain, suffering, disability and death, yet primary care clinicians detect major depression in only one-third to one-half of their patients with major depression (Williams Jr, 2002; Schonfeld, 1997). Additionally, more than 80% of patients with depression have a medical comorbidity (Klinkman, 2003). Usual care for depression in the primary care setting has resulted in only about half of depressed adults getting treated (Kessler, 2005) and only 20-40% showing substantial improvement over 12 months (Unützer, 2002; Katon, 1999). Approximately 70-80% of antidepressants are prescribed in primary care, making it critical that clinicians know how to use them and have a system that supports best practices (Mojtabai, 2008).
At any given time, 9% of the population has a depressive disorder, and 3.4% has major depression (Strine, 2008). In a 12-month time period, 6.6% of the U.S. population will have experienced major depression, and 16.6% of the population will experience depression in their lifetime (Kessler, 2005).
Additionally, major depression was second only to back and neck pain for having the greatest effect on disability days, at 386.6 million U.S. days per year (Merikangas, 2007).
In a WHO study of more than 240,000 people across 60 countries, depression was shown to produce the greatest decrease in quality of health compared to several other chronic diseases. Health scores worsened when depression was a comorbid condition, and the most disabling combination was depression and diabetes (Moussavi, 2007).
A 2011 study showed a relationship between the severity of depression symptoms and work function. Data was analyzed from 771 depressed patients who were currently employed. The data showed that for every 1-point increase in PHQ-9 score, patients experienced an additional mean productivity loss of 1.65%. And, even minor levels of depression symptoms were associated with decrements in work function (Beck, 2011).
Clinicians should acknowledge the impact of culture and cultural differences on physical and mental health. There is evidence that non-majority racial and cultural groups in the U.S. are less likely to be treated for depression than European Americans. In an epidemiological study that compared rates of diagnosing and treating depression in the early 1990s to patterns 10 years later, only 4.9% of minorities were treated with antidepressants compared with 12.4% of non-Hispanic Caucasians (Mojtabai, 2008).
A person’s cultural and personal experiences influence his/her beliefs and therefore attitudes and preferences. If these experiences are taken into consideration, openness to and readiness to change (including readiness to seek and adhere to treatment) will be enhanced. People of differing racial/ethnic groups are optimally treated using currently available evidence-based interventions when differential personal elements, from biological to environmental to cultural, are considered during the treatment planning process (Schraufnagel, 2006).
Assessment and treatment tools
Cultural beliefs and common presentations