What type of data is preferred for metrics in Lifecycle-Based-Design Assessments?

In Lifecycle-Based-Design Assessments, measurements using primary data are preferred because they provide the most accurate and specific information regarding the materials, processes, and impacts involved in a product's lifecycle. Primary data is collected directly from real-world sources and reflects the actual conditions and characteristics of the product or operation being assessed. This inherent specificity allows for a more reliable analysis of environmental impacts, resource usage, and potential improvements in sustainability practices.

Using primary data ensures that the metrics are grounded in reality rather than relying on potentially outdated or generalized information, which can lead to inaccuracies in assessments. Accurate metrics derived from primary data facilitate better decision-making and promote effective strategies for reducing environmental impacts throughout a product's lifecycle.