Network structure of depression symptomology in participants with and without depressive disorder: the population-based Health 2000-2011 study.

Network structure of depression symptomology in participants with and without depressive disorder: the population-based Health 2000-2011 study.

Publication date: Feb 11, 2020

Putative causal relations among depressive symptoms in forms of network structures have been of recent interest, with prior studies suggesting that high connectivity of the symptom network may drive the disease process. We examined in detail the network structure of depressive symptoms among participants with and without depressive disorders (DD; consisting of major depressive disorder (MDD) and dysthymia) at two time points.

Participants were from the nationally representative Health 2000 and Health 2011 surveys. In 2000 and 2011, there were 5998 healthy participants (DD-) and 595 participants with DD diagnosis (DD+). Depressive symptoms were measured using the 13-item version of the Beck Depression Inventory (BDI). Fused Graphical Lasso was used to estimate network structures, and mixed graphical models were used to assess network connectivity and symptom centrality. Network community structure was examined using the walktrap-algorithm and minimum spanning trees (MST). Symptom centrality was evaluated with expected influence and participation coefficients.

Overall connectivity did not differ between networks from participants with and without DD, but more simple community structure was observed among those with DD compared to those without DD. Exploratory analyses revealed small differences between the samples in the order of one centrality estimate participation coefficient.

Community structure, but not overall connectivity of the symptom network, may be different for people with DD compared to people without DD. This difference may be of importance when estimating the overall connectivity differences between groups with and without mental disorders.

Hakulinen, C., Fried, E.I., Pulkki-Raback, L., Virtanen, M., Suvisaari, J., and Elovainio, M. Network structure of depression symptomology in participants with and without depressive disorder: the population-based Health 2000-2011 study. 21011. 2020 Soc Psychiatry Psychiatr Epidemiol.

Concepts Keywords
Algorithm Detail network
Beck Depression Inventory Psychiatry
Community Structure Psychiatric diagnosis
Depression Psychology
Dysthymia Human behavior
Graphical Models Mood disorders
Major Depressive Disorder Abnormal psychology
Mental Disorders Bipolar spectrum
MST Dysthymia
Symptom Depression
Depressive
Major depressive disorder

Semantics

Type Source Name
disease MESH depression
disease MESH depressive disorder
disease MESH major depressive disorder
disease MESH diagnosis
disease MESH community
disease MESH mental disorders

Original Article

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