• Mi Jin Lee, Leslie K Hasche, Sunha Choi, Enola K Proctor, and Nancy Morrow-Howell.
• Department of Social Welfare, Konkuk University, Danwol-dong, Chungju-si, South Korea. mleegwb@kku.ac.kr
• Aging Ment Health. 2013 Jan 1; 17 (4): 461-9.

ObjectivesThis study extends existing knowledge regarding the continuum between major depression (MD) and subthreshold depression (SD) by examining differences in symptomology and associative factors for a subpopulation of older adults with functional disability.MethodOur sample consisted of clients age 60 and above entering public community long term care derived from the baseline survey of a longitudinal study (315 non-depressed, 74 MD, and 221 SD). We used the Diagnostic Interview Schedule to establish diagnoses of MD, the Center for Epidemiological Studies Depression Scale (CES-D) to assess SD, and other self-report measures to explore potential associative factors of demographics, comorbidity, social support, and stressors.ResultsNo differences in CES-D identified symptoms occurred between the two groups. MD and SD were both associated with lower education, poorer social support, more severe medical conditions, and higher stress when compared to non-depressed older adults. Younger age and being female were associated solely with MD; whereas, worse perceived health and more trouble affording food were associated solely with SD. The only associative factor significantly different between MD and SD was age. Those with MD were more likely to be younger than those with SD.ConclusionOur findings of symptom profiles and associative factors lend support to the continuum notion of depression. Identification of only older adults within the community long-term care service system who meet criteria for MD would leave many older adults, who also face multiple comorbidities, high levels of stress and social isolation, and substantial depressive symptoms undiagnosed and untreated.

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