| 21. |
- Dzhambov, Angel M., et al.
(författare)
-
Analytical approaches to testing pathways linking greenspace to health : A scoping review of the empirical literature
- 2020
-
Ingår i: Environmental Research. - : Elsevier BV. - 0013-9351 .- 1096-0953. ; 186
-
Forskningsöversikt (refereegranskat)abstract
- Background: Inadequate translation from theoretical to statistical models of the greenspace - health relationship may lead to incorrect conclusions about the importance of some pathways, which in turn may reduce the effectiveness of public health interventions involving urban greening. In this scoping review we aimed to: (1) summarize the general characteristics of approaches to intervening variable inference (mediation analysis) employed in epidemiological research in the field; (2) identify potential threats to the validity of findings; and (3) propose recommendations for planning, conducting, and reporting mediation analyses.Methods: We conducted a scoping review, searching PubMed, Scopus, and Web of Science for peer-reviewed epidemiological studies published by December 31, 2019. The list of potential studies was continuously updated through other sources until March 2020. Narrative presentation of the results was coupled with descriptive summary of study characteristics.Results: We found 106 studies, most of which were cross-sectional in design. Most studies only had a spatial measure of greenspace. Mental health/well-being was the most commonly studied outcome, and physical activity and air pollution were the most commonly tested intervening variables. Most studies only conducted single mediation analysis, even when multiple potentially intertwined mediators were measured. The analytical approaches used were causal steps, difference-of-coefficients, product-of-coefficients, counterfactual framework, and structural equation modelling (SEM). Bootstrapping was the most commonly used method to construct the 95% CI of the indirect effect. The product-of-coefficients method and SEM as used to investigate serial mediation components were more likely to yield findings of indirect effect. In some cases, the causal steps approach thwarted tests of indirect effect, even though both links in an indirect effect were supported. In most studies, sensitivity analyses and proper methodological discussion of the modelling approach were missing.Conclusions: We found a persistent pattern of suboptimal conduct and reporting of mediation analysis in epidemiological studies investigating pathways linking greenspace to health; however, recent years have seen improvements in these respects. Better planning, conduct, and reporting of mediation analyses are warranted.
|
|
| 22. |
- Dzhambov, Angel M., et al.
(författare)
-
Multiple pathways link urban green- and bluespace to mental health in young adults
- 2018
-
Ingår i: Environmental Research. - : Elsevier. - 0013-9351 .- 1096-0953. ; 166, s. 223-233
-
Tidskriftsartikel (refereegranskat)abstract
- Background: A growing body of scientific literature indicates that urban green- and bluespace support mental health; however, little research has attempted to address the complexities in likely interrelations among the pathways through which benefits plausibly are realized. Objectives: The present study examines how different plausible pathways between green/bluespace and mental health can work together. Both objective and perceived measures of green- and bluespace are used in these models. Methods: We sampled 720 students from the city of Plovdiv, Bulgaria. Residential greenspace was measured in terms of the Normalized Difference Vegetation Index (NDVI), tree cover density, percentage of green areas, and Euclidean distance to the nearest green space. Bluespace was measured in terms of its presence in the neighborhood and the Euclidean distance to the nearest bluespace. Mental health was measured with the 12-item form of the General Health Questionnaire (GHQ-12). The following mediators were considered: perceived neighborhood green/bluespace, restorative quality of the neighborhood, social cohesion, physical activity, noise and air pollution, and environmental annoyance. Structural equation modelling techniques were used to analyze the data. Results: Higher NDVI within a 300 m buffer around the residence was associated with better mental health through higher perceived greenspace; through higher perceived greenspace, leading to increased restorative quality, and subsequently to increased physical activity (i.e., serial mediation); through lower noise exposure, which in turn was associated with lower annoyance; and through higher perceived greenspace, which was associated with lower annoyance. Presence of bluespace within a 300 m buffer did not have a straightforward association with mental health owing to competitive indirect paths: one supporting mental health through higher perceived bluespace, restorative quality, and physical activity; and another engendering mental ill-health through higher noise exposure and annoyance. Conclusions: We found evidence that having more greenspace near the residence supported mental health through several indirect pathways with serial components. Conversely, bluespace was not clearly associated with mental health.
|
|
| 23. |
- Dzhambov, Angel M., et al.
(författare)
-
Residential greenspace is associated with mental health via intertwined capacity-building and capacity-restoring pathways
- 2019
-
Ingår i: Environmental Research. - : ACADEMIC PRESS INC ELSEVIER SCIENCE. - 0013-9351 .- 1096-0953. ; 178
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Experiences afforded by natural settings promote health by helping people to build new adaptive capacities and to restore existing capacities. The aim of this study was to examine relations among restorative experience, mindfulness, rumination and psychological resilience in pathways linking residential greenspace to anxiety and depression symptoms.Methods: We sampled 529 university students residing in Plovdiv, Bulgaria. Residential greenspace was measured in terms of the Normalized Difference Vegetation Index (NDVI) and tree cover density for different buffer sizes. Symptoms of anxiety and depression were measured with the Generalized Anxiety Disorder scale (7-item) and Patient Health Questionnaire (9-item), respectively. The following mediators were assessed by self-report: perceived greenspace, restorative quality of the neighborhood, dispositional mindfulness, rumination, and psychological resilience. Structural equation modelling techniques were used to test the theoretically-indicated relations among the variables.Results: Across different buffer sizes, higher greenspace was consistently associated with reduced scores on the anxiety and depression scales. This effect was partially mediated via several pathways. Specifically, higher NDVI500-m was associated with higher perceived greenspace, and in turn, with higher restorative quality, and then with higher mindfulness, lower rumination, and greater resilience to stress, and consequently, with better mental health.Conclusions: Our findings affirm the potential of greenspace for building psychological resilience and promoting health by offsetting dysfunctional rumination and facilitating mindfulness as components of intertwined capacity-building and capacity-restoring pathways.
|
|
| 24. |
- Dzhambov, Angel, et al.
(författare)
-
Urban residential greenspace and mental health in youth : Different approaches to testing multiple pathways yield different conclusions
- 2018
-
Ingår i: Environmental Research. - : Elsevier BV. - 0013-9351 .- 1096-0953. ; 160, s. 47-59
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Urban greenspace can benefit mental health through multiple mechanisms. They may work together, but previous studies have treated them as independent.Objectives: We aimed to compare single and parallel mediation models, which estimate the independent contributions of different paths, to several models that posit serial mediation components in the pathway from greenspace to mental health.Methods: We collected cross-sectional survey data from 399 participants (15-25 years of age) in the city of Plovdiv, Bulgaria. Objective "exposure" to urban residential greenspace was defined by the Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index, tree cover density within the 500-m buffer, and Euclidean distance to the nearest urban greenspace. Self-reported measures of availability, access, quality, and usage of greenspace were also used. Mental health was measured with the General Health Questionnaire. The following potential mediators were considered in single and parallel mediation models: restorative quality of the neighborhood, neighborhood social cohesion, commuting and leisure time physical activity, road traffic noise annoyance, and perceived air pollution. Four models were tested with the following serial mediation components: (1) restorative quality -> social cohesion; (2) restorative quality -> physical activity; (3) perceived traffic pollution -> restorative quality; (4) and noise annoyance -> physical activity.Results: There was no direct association between objectively-measured greenspace and mental health. For the 500-m buffer, the tests of the single mediator models suggested that restorative quality mediated the relationship between NDVI and mental health. Tests of parallel mediation models did not find any significant indirect effects. In line with theory, tests of the serial mediation models showed that higher restorative quality was associated with more physical activity and more social cohesion, and in turn with better mental health. As for self-reported greenspace measures, single mediation through restorative quality was significant only for time in greenspace, and there was no mediation though restorative quality in the parallel mediation models; however, serial mediation through restorative quality and social cohesion/physical activity was indicated for all self-reported measures except for greenspace quality.Conclusions: Statistical models should adequately address the theoretically indicated interdependencies between mechanisms underlying association between greenspace and mental health. If such causal relationships hold, testing mediators alone or in parallel may lead to incorrect inferences about the relative contribution of specific paths, and thus to inappropriate intervention strategies.
|
|
| 25. |
- Edvinsson, Johanna, Doktorand, et al.
(författare)
-
A Work Time Control Tradeoff in Flexible Work: Competitive Pathways to Need for Recovery
- 2023
-
Ingår i: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 20:1
-
Tidskriftsartikel (refereegranskat)abstract
- Work time control may offer opportunities, but also implies risks for employee recovery, influenced by increased work-related ICT use and overtime work. However, this risk–opportunity tradeoff remains understudied. This study aimed to test two different models of associations between work time control, work-related ICT use, overtime work, and the need for recovery. These models were constructed based on data on office workers with flexible work arrangements. Cross-sectional data were obtained with questionnaires (n = 2582) from employees in a Swedish multi-site organization. Regression models treated the three determinants of the need for recovery either as independent, or as linked in a causal sequence. The test of independent determinants confirmed that more work time control was associated with less need for recovery, whereas more ICT use and overtime work were associated with a higher need for recovery. In a test of serial mediation, more work time control contributed to a greater need for recovery through more ICT use and then more overtime work. Work time control also had a competitive, indirect effect through a negative association with overtime work. Our results suggest that work time control is beneficial for employee recovery, but may for some be associated with more work-related ICT use after regular working hours, thus increasing recovery needs. Policies that support work time control can promote recovery, but employers must attend to the risk of excessive use of ICT outside of regular working hours.
|
|
| 26. |
|
|
| 27. |
- Fransson, Urban, 1948, et al.
(författare)
-
Leisure home ownership and early death : A longitudinal study in Sweden
- 2010
-
Ingår i: Health and Place. - : Elsevier BV. - 1353-8292 .- 1873-2054. ; 16:1, s. 71-78
-
Tidskriftsartikel (refereegranskat)abstract
- People who perform paid work may benefit from psychological restoration afforded by a leisure home and its natural surroundings. This may hinder the development of some forms of life-threatening illness. Using longitudinal register data for 108,114 employed Swedes, we assessed the prospective association between leisure home ownership and death before age 65. Among men, but not among women, leisure home owners had lower odds of early death, after adjustment for sociodemographic and residential characteristics (OR=0.875, 95% CI=0.702-0.980). The results bear on natural environments as health resources, inform debate on urban densification, and broaden the discussion of residence and health.
|
|
| 28. |
|
|
| 29. |
- Gonzalez, Marianne Thorsen, et al.
(författare)
-
Therapeutic horticulture in clinical depression : a prospective study of active components
- 2010
-
Ingår i: Journal of Advanced Nursing. - : Wiley. - 0309-2402 .- 1365-2648. ; 66:9, s. 2002-2013
-
Tidskriftsartikel (refereegranskat)abstract
- Aim. This paper is a report of a study conducted to assess change in depression severity, perceived attentional capacity and rumination (brooding) in individuals with clinical depression during a therapeutic horticulture programme and to investigate if the changes were mediated by experiences of being away and fascination. Background. Individuals with clinical depression suffer from distortion of attention and rumination. Interventions can help to disrupt maladaptive rumination and promote restoration of depleted attentional capacity. Method. A single-group study was conducted with a convenience sample of 28 people with clinical depression in 2009. Data were collected before, twice during, and immediately after a 12-week therapeutic horticulture programme, and at 3-month follow-up. Assessment instruments were the Beck Depression Inventory, Attentional Function Index, Brooding Scale, and Being Away and Fascination subscales from the Perceived Restorativeness Scale. Findings. Mean Beck Depression Inventory scores declined by 4 center dot 5 points during the intervention (F = 5 center dot 49, P = 0 center dot 002). The decline was clinically relevant for 50% of participants. Attentional Function Index scores increased (F = 4 center dot 14, P = 0 center dot 009), while Brooding scores decreased (F = 4 center dot 51, P = 0 center dot 015). The changes in Beck Depression Inventory and Attentional Function Index scores were mediated by increases in Being Away and Fascination, and decline in Beck Depression Inventory scores was also mediated by decline in Brooding. Participants maintained their improvements in Beck Depression Inventory scores at 3-month follow-up. Conclusion. Being away and fascination appear to work as active components in a therapeutic horticulture intervention for clinical depression.
|
|
| 30. |
|
|
