The majority of studies reporting a diet adherence outcome favouring the intervention group compared to
the control/usual care group in the short-term also reported no significant effect at later time points. Studies investigating interventions
such as a group session, individual session, reminders, restriction and behaviour change techniques reported no diet adherence outcome
showing a statistically significant difference favouring the intervention group. Finally, interventions were generally of short duration,
studies used different methods for measuring adherence and the quality of the studies was generally low.