However, recent studies have overcome most methodological flaws and suggested small effect sizes for these associations for the individual, but an potential important effect size on a population level.
This integrative approach seems to offer the best chance, at least in theory, of genuinely accessing the strengths of both the empirical and the philosophical contributions, and through our engagement with the field to date we felt that it is the approach that has received the most methodological attention, is the most heterogeneous, and is most in need of systematic review.
The recommendations cover most methodological issues: study design; definition of population of interest; control of bias, sample selection and participation rate; how to access and engage participants, and methods of enquiry; case definition and diagnosis, and algorithm for making headache diagnoses; use of pilot studies; measurement of headache burden.
According to Dancy, theories that accord an important justificatory role to moral principles, as most methodological approaches in bioethics do, wrongly assume that right- or wrong-making features of various situations must remain constant from one case to another.
Most methodological aspects of the new method combine existing ideas.
Currently, most methodological research concerning accelerometry has focused on calibrating (validating) accelerometer output according to some standard measure.
Most methodological limitations of the study indicate we may be underestimating the number of children exposed to parental psychiatric disorders.
Despite the fact that most studies scored well on most methodological quality dimensions, model validation still formed a weak spot: in some studies there was no report on how performance measures were obtained and in others there was no independent validation set used.
The paper concludes with a discussion of the most pressing methodological and theoretical issues that need addressing for greater progress in assessing social impacts.
However, these tools are not based on a broad literature search, and most target methodological and reporting concerns.
