Client adherence to dietary advice (e.g. biochemical
measures within acceptable limits, mean dietary intake,
proportion of clients achieving the dietary advice). We included
studies reporting adherence to dietary advice as a primary
outcome, namely those clearly mentioning a measurement of
diet adherence in the title or the objective of the study and/or
those reporting the proportion of patients adhering to dietary
advice. We excluded studies reporting mean dietary intake
without specifically assessing adherence to dietary advice.