Knowledge, behaviours, practices, and expectations regarding climate change and environmental sustainability among health workers in France: a multicentre, cross-sectional study.

Background: Faced with climate change, hospitals are confronted with a dual challenge. On one hand, they need to embark on a far-reaching ecological transformation to reduce their contribution to greenhouse gas emissions and other environmental impacts; on the other hand, they need to limit the effects of climate change on their activities. We aimed to evaluate the knowledge, behaviours, practices, and expectations of health workers in French hospitals regarding climate change and environmental sustainability.

Methods: This multicentre, cross-sectional study was carried out in six French hospitals from June 1, 2021 to Dec 31, 2022. All health workers at the hospitals were eligible to participate and were recruited through internal publicity. We designed a structured questionnaire consisting of five parts: participant characteristics, knowledge and perceptions of climate change, pro-environmental behaviours, practices concerning environmental sustainability actions, and expectations. A multilevel logistic regression model was used to evaluate associations between the knowledge, behaviours, and practices of health workers and the characteristics of the health workers and hospitals.

Findings: Of 57 034 health workers across the six hospitals, 4552 (8·0%) participated in the study. Of those for whom gender data were available, 3518 (78·2%) participants were women and 979 (21·8%) were men. Participants considered energy consumption (71·0%) and waste and discharges related to medical activities (55·6%) and non-medical activities (50·2%) to be the three activities with the greatest environmental impact. On a scale of 1 (not a priority) to 10 (high priority), the median rating attributed by the participants to the commitment of their hospitals to ecological transformation was 5·0 (IQR 3·0-6·0). 1079 (23·7%) of 4552 participants had already initiated at least one environmental sustainability action in their hospital. Barriers reported by participants to the implementation of environmental sustainability-related projects were the lack of dedicated time (40·4%), hierarchical support (32·5%), methodological support (28·9%), and access to training (23·7%). The presence of a sustainable development steering committee, especially one with more than 5 years of activity, was positively associated with health workers feeling better informed about the ecological transformation of their hospital (adjusted odds ratio 1·78 [95% CI 1·29-2·45]), having better knowledge of the environmental impacts of their hospital (1·83 [1·32-2·53]), and initiating a larger number of environmental sustainability actions (1·74 [1·33-2·29]).

Interpretation: We showed that health workers in French hospitals seem to be committed to the ecological transformation of their workplaces, and identified some drivers and barriers to further support these essential transformations. There is an urgent need to bolster training for all health workers, enhance structural frameworks within hospitals, and encourage future interdisciplinary research on the vulnerability of health-care facilities to climate change.

Funding: The University Hospital of Poitiers.