Background: To examine the relationship between social capital and depression among community-dwelling older adults in Anhui Province, China.
Methods: A cross-sectional study was conducted among older people selected from three cities of Anhui Province, China using a multi-stage stratified cluster random sampling method. Data were collected through questionnaire interviews and information on demographic characteristics, social capital, and depression was collected. The generalized linear model and classification and regression tree model were employed to assess the association between social capital and depression.
Results: Totally, 1,810 older people aged ≥ 60 years were included in the final analysis. Overall, all of the social capital dimensions were positively associated with depression: social participation (coefficient: 0.35, 95% CI: 0.22 - 0.48), social support (coefficient:0.18, 95% CI:0.07 - 0.28), social connection (coefficient: 0.76, 95% CI:0.53 - 1.00), trust (coefficient:0.62, 95% CI:0.33 - 0.92), cohesion (coefficient:0.31, 95% CI:0.17 - 0.44) and reciprocity (coefficient:0.30, 95% CI:0.11 - 0.48), which suggested that older people with higher social capital had a smaller chance to develop depression. A complex joint effect of certain social capital dimensions on depression was also observed. The association with depression and the combinative effect of social capital varied among older adults across the cities.
Conclusions: Our study suggests that improving social capital could aid in the prevention of depression among older adults.

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This is a list of supplementary files associated with this preprint. Click to download.
Additional file 1, doc, social capital and elderly depression questionnaire (English version), detailed information about the measurement tool.
Additional file 2, doc, results of collinearity analysis.
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Posted 15 Oct, 2020
On 08 Oct, 2020
On 07 Oct, 2020
Received 13 Sep, 2020
Invitations sent on 05 Sep, 2020
On 05 Sep, 2020
On 02 Sep, 2020
On 01 Sep, 2020
On 01 Sep, 2020
Received 26 Aug, 2020
On 26 Aug, 2020
Received 08 Aug, 2020
Received 01 Aug, 2020
On 31 Jul, 2020
On 26 Jul, 2020
Invitations sent on 25 Jul, 2020
On 25 Jul, 2020
On 21 Jul, 2020
On 20 Jul, 2020
On 20 Jul, 2020
Posted 15 Oct, 2020
On 08 Oct, 2020
On 07 Oct, 2020
Received 13 Sep, 2020
Invitations sent on 05 Sep, 2020
On 05 Sep, 2020
On 02 Sep, 2020
On 01 Sep, 2020
On 01 Sep, 2020
Received 26 Aug, 2020
On 26 Aug, 2020
Received 08 Aug, 2020
Received 01 Aug, 2020
On 31 Jul, 2020
On 26 Jul, 2020
Invitations sent on 25 Jul, 2020
On 25 Jul, 2020
On 21 Jul, 2020
On 20 Jul, 2020
On 20 Jul, 2020
Background: To examine the relationship between social capital and depression among community-dwelling older adults in Anhui Province, China.
Methods: A cross-sectional study was conducted among older people selected from three cities of Anhui Province, China using a multi-stage stratified cluster random sampling method. Data were collected through questionnaire interviews and information on demographic characteristics, social capital, and depression was collected. The generalized linear model and classification and regression tree model were employed to assess the association between social capital and depression.
Results: Totally, 1,810 older people aged ≥ 60 years were included in the final analysis. Overall, all of the social capital dimensions were positively associated with depression: social participation (coefficient: 0.35, 95% CI: 0.22 - 0.48), social support (coefficient:0.18, 95% CI:0.07 - 0.28), social connection (coefficient: 0.76, 95% CI:0.53 - 1.00), trust (coefficient:0.62, 95% CI:0.33 - 0.92), cohesion (coefficient:0.31, 95% CI:0.17 - 0.44) and reciprocity (coefficient:0.30, 95% CI:0.11 - 0.48), which suggested that older people with higher social capital had a smaller chance to develop depression. A complex joint effect of certain social capital dimensions on depression was also observed. The association with depression and the combinative effect of social capital varied among older adults across the cities.
Conclusions: Our study suggests that improving social capital could aid in the prevention of depression among older adults.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5
This is a list of supplementary files associated with this preprint. Click to download.
Additional file 1, doc, social capital and elderly depression questionnaire (English version), detailed information about the measurement tool.
Additional file 2, doc, results of collinearity analysis.
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