Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment
Introduction: We examined the extent to which the post-disaster deterioration of social support and social capital mediates the associations between disaster-related experiences and depressive symptoms among survivors to test the social support deterioration model. Methods: We used unique natural ex...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Wellbeing, Space and Society |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666558120300063 |
| _version_ | 1819069803149656064 |
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| author | Koichiro Shiba Aki Yazawa Shiho Kino Katsunori Kondo Jun Aida Ichiro Kawachi |
| author_facet | Koichiro Shiba Aki Yazawa Shiho Kino Katsunori Kondo Jun Aida Ichiro Kawachi |
| author_sort | Koichiro Shiba |
| collection | DOAJ |
| description | Introduction: We examined the extent to which the post-disaster deterioration of social support and social capital mediates the associations between disaster-related experiences and depressive symptoms among survivors to test the social support deterioration model. Methods: We used unique natural experiment data (n = 3567) stemming from the 2011 Great East Japan Earthquake. The follow-up survey was conducted 2.5 years after the disaster. We examined associations between changes in depressive symptoms, disaster-related experiences (loss of loved ones, changes in household income, loss of job, drop in subjective economic status, and home loss), and post-disaster deterioration of four different types of social support (i.e., kin emotional, kin instrumental, non-kin emotional, and non-kin instrumental support), as well as two dimensions of individual-level social capital (i.e., informal socializing and social cohesion). We then performed causal mediation analysis. Results: We found that there was deterioration of social support and social capital among individuals with disaster-related experiences. We also found associations between deterioration of social support/capital and worsening of depressive symptoms for specific categories of disaster experiences (i.e., drop in subjective economic status, loss of job, and home loss). However, causal mediation analysis showed little evidence of mediation by post-disaster deterioration of social support/capital. There was some evidence to suggest exposure-mediator interaction such that the association between social support/capital deterioration and depressive symptoms was weaker among those with disaster experiences. Discussion: The social support deterioration model was not empirically supported among older-adult disaster survivors of the 2011 Great East Japan Earthquake, after accounting for exposure-mediator interactions. |
| first_indexed | 2024-12-21T16:55:50Z |
| format | Article |
| id | doaj.art-1a479d4862d942e881479bfaa3cbb8ca |
| institution | Directory Open Access Journal |
| issn | 2666-5581 |
| language | English |
| last_indexed | 2024-12-21T16:55:50Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Wellbeing, Space and Society |
| spelling | doaj.art-1a479d4862d942e881479bfaa3cbb8ca2022-12-21T18:56:45ZengElsevierWellbeing, Space and Society2666-55812020-01-011100006Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experimentKoichiro Shiba0Aki Yazawa1Shiho Kino2Katsunori Kondo3Jun Aida4Ichiro Kawachi5Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA; Corresponding author.Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USADepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA; Department of Health Education and Health Sociology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, JapanCenter for Preventive Medical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8670, Japan; Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, 7-430 Morioka-cho, Obu City, Aichi 474-8511, JapanDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, JapanDepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USAIntroduction: We examined the extent to which the post-disaster deterioration of social support and social capital mediates the associations between disaster-related experiences and depressive symptoms among survivors to test the social support deterioration model. Methods: We used unique natural experiment data (n = 3567) stemming from the 2011 Great East Japan Earthquake. The follow-up survey was conducted 2.5 years after the disaster. We examined associations between changes in depressive symptoms, disaster-related experiences (loss of loved ones, changes in household income, loss of job, drop in subjective economic status, and home loss), and post-disaster deterioration of four different types of social support (i.e., kin emotional, kin instrumental, non-kin emotional, and non-kin instrumental support), as well as two dimensions of individual-level social capital (i.e., informal socializing and social cohesion). We then performed causal mediation analysis. Results: We found that there was deterioration of social support and social capital among individuals with disaster-related experiences. We also found associations between deterioration of social support/capital and worsening of depressive symptoms for specific categories of disaster experiences (i.e., drop in subjective economic status, loss of job, and home loss). However, causal mediation analysis showed little evidence of mediation by post-disaster deterioration of social support/capital. There was some evidence to suggest exposure-mediator interaction such that the association between social support/capital deterioration and depressive symptoms was weaker among those with disaster experiences. Discussion: The social support deterioration model was not empirically supported among older-adult disaster survivors of the 2011 Great East Japan Earthquake, after accounting for exposure-mediator interactions.http://www.sciencedirect.com/science/article/pii/S2666558120300063DisasterDepressionSocial support deterioration modelMediationSocial supportSocial capital |
| spellingShingle | Koichiro Shiba Aki Yazawa Shiho Kino Katsunori Kondo Jun Aida Ichiro Kawachi Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment Wellbeing, Space and Society Disaster Depression Social support deterioration model Mediation Social support Social capital |
| title | Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment |
| title_full | Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment |
| title_fullStr | Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment |
| title_full_unstemmed | Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment |
| title_short | Depressive symptoms in the aftermath of major disaster: Empirical test of the social support deterioration model using natural experiment |
| title_sort | depressive symptoms in the aftermath of major disaster empirical test of the social support deterioration model using natural experiment |
| topic | Disaster Depression Social support deterioration model Mediation Social support Social capital |
| url | http://www.sciencedirect.com/science/article/pii/S2666558120300063 |
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