A potential limitation of the study is the reliance on the self-reported pre-pregnancy weight
and nutrition intake and physical activity measures with the potential for recall bias, and hence, biased analyses. This is a common concern for GWG, nutrition and physical activity studies but given the purpose, size and budget of this study, more detailed assessments were
not considered feasible. Importantly, the study strengths include the use of multiple technological elements to appeal to a range of preferences and learning styles and
the potential for sustainable provision within models of antenatal care