Evidence synthesis refers to the process of bringing together information from a range of sources and disciplines to inform debates and decisions on specific issues. We use evidence synthesis to establish what works in interventions to protect the public’s health, and for estimating the size of health need in a geographical area or population. There are different methodologies or ways of doing this: we conduct systematic reviews and network meta-analyses (NMAs) and use Multiple Parameter Evidence Synthesis to support public health surveillance and evaluation of health care programmes. We also provide expertise on methods to evaluate interventions using observational data.
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