Hansson Erik, Jakobsson Kristina, Glaser Jason, Wesseling Catharina, Chavarria Denis, Lucas Rebekah A I, Prince Heath, Wegman David H
La Isla Network, 2219 California NW Unit 52, 20008 Washington, District of Columbia, United States.
Occupational and Environmental Medicine, School of Public Health and Community Medicine, Sahlgrenska Academy, University of Gothenburg, Box 414, 413 90 Gothenburg, Sweden.
Ann Work Expo Health. 2024 Apr 22;68(4):366-375. doi: 10.1093/annweh/wxae007.
Assess the impact of environmental heat and a rest-shade-hydration (RSH) intervention against heat stress on productivity of piece-paid Mesoamerican sugarcane cutters. These workers are at a high risk of chronic kidney disease of non-traditional origin (CKDnt), from the severe heat stress they experience due to heavy work under hot conditions. RSH interventions in these populations improve kidney health outcomes, but their impact on productivity has yet to be examined.
We accessed routine productivity data from seed (SC, N = 749) and burned (BCC, N = 535) sugarcane cutters observed over five harvest seasons with increasing RSH intervention at a large Nicaraguan sugarcane mill. Hourly field-site wet-bulb globe temperature (WBGT) was recorded by mill staff and summarized as a daily mean. Mixed linear regression was used to model daily productivity, adjusting for age (18-29, 30-44, and >45 years), sex, WBGT (<28, 28-29, 29-30, 30-31, and >31 °C) on the same and preceding day, harvest season (2017-18 to 2021-22), month, and acclimatization status (<1, 1-2, and >2 weeks).
There was an inverse dose-response relationship between SC productivity and WBGT on the same and preceding days, decreasing by approximately 3%/°C WBGT. Productivity increased during the study period, i.e. coinciding with RSH scale-up, by approximately 19% in SC and 9% in BCC.
Agricultural worker productivity was expected lower on hotter days, strengthening the interest in all stakeholders to mitigate increasing global temperatures and their impact. Despite decreasing the total time allocated for work each day, an RSH intervention appears to result in increased productivity and no apparent loss in productivity.
评估环境高温以及休息-遮阳-补水（RSH）干预措施对抗热应激对按件计酬的中美洲甘蔗砍伐工人生产力的影响。这些工人因在炎热条件下从事繁重工作而遭受严重热应激，面临非传统病因慢性肾脏病（CKDnt）的高风险。对这些人群的RSH干预可改善肾脏健康状况，但其对生产力的影响尚待研究。
我们获取了来自种子甘蔗砍伐工人（SC，N = 749）和烧砍甘蔗砍伐工人（BCC，N = 535）的常规生产力数据，这些数据来自在尼加拉瓜一家大型甘蔗厂五个收获季节观察到的情况，期间RSH干预措施不断增加。工厂工作人员记录了每小时的现场湿球黑球温度（WBGT），并汇总为日均值。使用混合线性回归对每日生产力进行建模，对年龄（18 - 29岁、30 - 44岁和>45岁）、性别、当日和前一日的WBGT（<28、28 - 29、29 - 30、30 - 31和>31°C）、收获季节（2017 - 18至2021 - 22）、月份和适应状态（<1、1 - 2和>2周）进行了调整。
SC生产力与当日和前一日的WBGT之间存在剂量反应反比关系，WBGT每升高1°C，生产力下降约3%。在研究期间，即与RSH扩大规模同时，SC的生产力提高了约19%，BCC的生产力提高了约9%。
预计在较热的日子里农业工人的生产力较低，这增强了所有利益相关者缓解全球气温上升及其影响的兴趣。尽管每天分配的工作总时间减少，但RSH干预似乎提高了生产力，且生产力没有明显损失。
