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首页> 外文期刊>Environmental Health: A Global Access Science Source >Area-aggregated assessments of perceived environmental attributes may overcome single-source bias in studies of green environments and health: results from a cross-sectional survey in southern Sweden
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Area-aggregated assessments of perceived environmental attributes may overcome single-source bias in studies of green environments and health: results from a cross-sectional survey in southern Sweden

机译：在绿色环境和健康研究中，对感知到的环境属性进行区域汇总评估可能会克服单一来源的偏见：瑞典南部的横断面调查结果

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Background Most studies assessing health effects of neighborhood characteristics either use self-reports or objective assessments of the environment, the latter often based on Geographical Information Systems (GIS). While objective measures require detailed landscape data, self-assessments may yield confounded results. In this study we demonstrate how self-assessments of green neighborhood environments aggregated to narrow area units may serve as an appealing compromise between objective measures and individual self-assessments. Methods The study uses cross-sectional data (N = 24,847) from a public health survey conducted in the county of Scania, southern Sweden, in 2008 and validates the Scania Green Score (SGS), a new index comprising five self-reported green neighborhood qualities (Culture, Lush, Serene, Spacious and Wild). The same qualities were also assessed objectively using landscape data and GIS. A multilevel (ecometric) model was used to aggregate individual self-reports to assessments of perceived green environmental attributes for areas of 1,000 square meters. We assessed convergent and concurrent validity for self-assessments of the five items separately and for the sum score, individually and area-aggregated. Results Correlations between the index scores based on self-assessments and the corresponding objective assessments were clearly present, indicating convergent validity, but the agreement was low. The correlation was even more evident for the area-aggregated SGS. All three scores (individual SGS, area-aggregated SGS and GIS index score) were associated with neighborhood satisfaction, indicating concurrent validity. However, while individual SGS was associated with vitality, this association was not present for aggregated SGS and the GIS-index score, suggesting confounding (single-source bias) when individual SGS was used. Conclusions Perceived and objectively assessed qualities of the green neighborhood environment correlate but do not agree. An index score based on self-reports but aggregated to narrow area units can be a valid approach to assess perceived green neighborhood qualities in settings where objective assessments are not possible or feasible.
机译：背景技术大多数评估邻里特征对健康的影响的研究都使用自我报告或客观的环境评估，后者通常基于地理信息系统（GIS）。虽然客观措施需要详细的景观数据，但自我评估可能会产生混淆的结果。在这项研究中，我们证明了将绿色邻里环境的自我评估汇总到狭窄区域的单元中如何可以作为客观措施与个人自我评估之间的一种有吸引力的折衷方案。方法该研究使用了瑞典南部斯堪尼亚县2008年进行的一次公共卫生调查得出的横断面数据（N = 24,847），并验证了斯堪尼亚绿色评分（SGS），这是一个由五个自我报告的绿色邻里组成的新指数品质（文化，郁郁葱葱，宁静，宽敞和狂野）。还使用景观数据和GIS客观评估了相同的质量。使用多层次（计量）模型汇总个人自我报告，以评估1000平方米区域的感知绿色环境属性。我们分别评估了五个项目的自我评估以及总和得分的收敛性和并行有效性，总和得分（分别和区域汇总）。结果基于自我评估的指标得分与相应的客观评估之间存在明显的相关性，表明收敛效度，但一致性较低。对于面积汇总的SGS，相关性甚至更加明显。所有三个评分（个人SGS，区域汇总SGS和GIS指数评分）均与邻里满意度相关，表明并发有效性。但是，尽管单个SGS与活力相关，但对于聚合SGS和GIS指数得分却不存在这种关联，这表明使用单个SGS时会产生混淆（单源偏差）。结论绿色邻里环境的感知和客观评估的质量具有相关性，但并不一致。基于自我报告但汇总到狭窄区域单位的指数得分可能是一种在无法进行客观评估的环境中评估感知的绿色邻里质量的有效方法。

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