Final answer:
A level 1b study on the USC Evidence Pyramid refers to a systematic review without meta-analysis, which is a high-level study design providing strong evidence for a specific topic.
Step-by-step explanation:
A level 1b study on the USC Evidence Pyramid refers to a systematic review without meta-analysis. It is considered a high-level study design that provides strong evidence on a particular topic. In this type of study, researchers gather and analyze multiple relevant studies to evaluate the effectiveness of an intervention or treatment, without combining the data through a meta-analysis.