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Temporal changes in associations between high temperature and hospitalizations by greenspace: Analysis in the Medicare population in 40 U.S. northeast counties
Environment International ( IF 11.8 ) Pub Date : 2021-07-02 , DOI: 10.1016/j.envint.2021.106737
Seulkee Heo 1 , Chen Chen 1 , Honghyok Kim 1 , Benjamin Sabath 2 , Francesca Dominici 2 , Joshua L Warren 3 , Qian Di 4 , Joel Schwartz 2 , Michelle L Bell 1
Affiliation  

Although research indicates health and well-being benefits of greenspace, little is known regarding how greenspace may influence adaptation to health risks from heat, particularly how these risks change over time. Using daily hospitalization rates of Medicare beneficiaries ≥65 years for 2000–2016 in 40 U.S. Northeastern urban counties, we assessed how temperature-related hospitalizations from cardiovascular causes (CVD) and heat stroke (HS) changed over time. We analyzed effect modification of those temporal changes by Enhanced Vegetation Index (EVI), approximating greenspace. We used a two-stage analysis including a generalized additive model and meta-analysis. Results showed that relative risk (RR) (per 1 °C increase in lag0–3 temperature) for temperature-HS hospitalization was higher in counties with the lowest quartile EVI (RR = 2.7, 95% CI: 2.0, 3.4) compared to counties with the highest quartile EVI (RR = 0.40, 95% CI: 0.14, 1.13) in the early part of the study period (2000–2004). RR of HS decreased to 0.88 (95% CI: 0.31, 2.53) in 2013-2016 in counties with the lowest quartile EVI. RR for HS changed over time in counties in the highest quartile EVI, with RRs of 0.4 (95% CI: −0.7, 1.4) in 2000–2004 and 2.4 (95% CI: 1.6, 3.2) in 2013–2016. Findings suggest that adaptation to heat-health associations vary by greenness. Greenspace may help lower risks from heat but such health risks warrant continuous local efforts such as heat-health plans.



中文翻译:

高温与绿地住院之间关联的时间变化:美国东北部 40 个县的医疗保险人口分析

尽管研究表明绿地对健康和福祉有好处,但对于绿地如何影响对热引起的健康风险的适应,尤其是这些风险如何随时间而变化,人们知之甚少。我们使用美国东北部 40 个城市县 2000-2016 年 ≥ 65 岁的医疗保险受益人的每日住院率,评估了心血管原因 (CVD) 和中暑 (HS) 导致的温度相关住院率如何随时间变化。我们通过近似绿地的增强植被指数 (EVI) 分析了这些时间变化的效果修正。我们使用了两阶段分析,包括广义相加模型和荟萃分析。结果表明,在四分位 EVI 最低的县(RR = 2.7, 95% CI: 2. 0, 3.4) 与研究早期(2000-2004 年)四分位数 EVI 最高的县(RR = 0.40, 95% CI: 0.14, 1.13)相比。在 2013-2016 年四分位 EVI 最低的县,HS 的 RR 降至 0.88(95% CI:0.31, 2.53)。在最高四分位 EVI 的县中,HS 的 RR 随时间变化,2000-2004 年的 RR 为 0.4(95% CI:-0.7,1.4),2013-2016 年为 2.4(95% CI:1.6,3.2)。研究结果表明,对热与健康关联的适应因绿色而异。绿地可能有助于降低高温风险,但此类健康风险需要当地持续努力,例如高温健康计划。在最高四分位 EVI 的县中,HS 的 RR 随时间变化,2000-2004 年的 RR 为 0.4(95% CI:-0.7,1.4),2013-2016 年为 2.4(95% CI:1.6,3.2)。研究结果表明,对热与健康关联的适应因绿色而异。绿地可能有助于降低高温风险,但此类健康风险需要当地持续努力,例如高温健康计划。在最高四分位 EVI 的县中,HS 的 RR 随时间变化,2000-2004 年的 RR 为 0.4(95% CI:-0.7,1.4),2013-2016 年为 2.4(95% CI:1.6,3.2)。研究结果表明,对热与健康关联的适应因绿色而异。绿地可能有助于降低高温风险,但此类健康风险需要当地持续努力,例如高温健康计划。

更新日期:2021-07-02
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