The phrase "methodological challenges" refers to difficulties or problems that arise when using or applying a specific method or approach in research or a particular task. Full definition
Thus, it can be possible to overcome some specific inherent methodological challenges in using historical data in longitudinal research. (bmcmedresmethodol.biomedcentral.com)
Authors offer ten methodological challenges of attempting to compare the safety of home and hospital birth in terms of the risk of perinatal death, and suggest how these can be overcome, and set out a number of «essentials» which must be in place before firm conclusions can be drawn from a study of the safety of planned homebirth (p 620). (believemidwiferyservices.com)
Research specific to homebirth is currently inundated with methodological challenges, which accreditation could work to address. (believemidwiferyservices.com)