Limitations
The high loss to follow-up needs to be considered when interpreting results. Process evaluation findings also need to be interpreted with caution as it is possible that satisfaction rates changed over time; however, this was not captured due to the high attrition rates. Dietary data were collected by self-report; therefore, misestimation of intake may have occurred. Males were underrepresented (15 %), meaning that generalisability to males or other age groups is limited. Compared with the national young adult population