Study designs vary in their relative risk of bias – that is, they vary in the extent to which researchers can be confident that impacts are due to home visiting rather than other factors. HomVEE accounts for risk of bias when assigning ratings to research. Research with a higher risk of bias receives a lower rating. For more details, please see Chapter 3 of the Version 2 Handbook of Procedures and Evidence Standards located on the Methods and Standards section of the website. HomVEE routinely contacts authors if additional details are needed to assess the appropriate rating to assign to the manuscript.
Why can research with some designs rate higher than research with other designs?