Effectiveness of a complex, pre-conception intervention to reduce the risk of diabetes by reducing adiposity in young adults in Malaysia: The Jom Mama project - A randomised controlled trial

Digital preconception interventions targeting weight, diet and physical activity: A systematic review

AIM

Optimising preconception health increases the likelihood of conception, positively influences short- and long-term pregnancy outcomes and reduces intergenerational chronic disease risk. Our aim was to synthesise study characteristics and maternal outcomes of digital or blended (combining face to face and digital modalities) interventions in the preconception period.

METHODS

We searched six databases (PubMed, Cochrane, Embase, Web of Science, CINHAL and PsycINFO) from 1990 to November 2022 according to the PRISMA guidelines for randomised control trials, quasi-experimental trials, observation studies with historical control group. Studies were included if they targeted women of childbearing age, older than 18 years, who were not currently pregnant and were between pregnancies or/and actively trying to conceive. Interventions had to be delivered digitally or via digital health in combination with face-to-face delivery and aimed to improve modifiable behaviours, including dietary intake, physical activity, weight and supplementation. Studies that included women diagnosed with type 1 or 2 diabetes were excluded. Risk of bias was assessed using the Academy of Nutrition and Dietetics quality criteria checklist. Study characteristics, intervention characteristics and outcome data were extracted.

RESULTS

Ten studies (total participants n=4,461) were included, consisting of nine randomised control trials and one pre-post cohort study. Seven studies received a low risk of bias and two received a neutral risk of bias. Four were digitally delivered and six were delivered using blended modalities. A wide range of digital delivery modalities were employed, with the most common being email and text messaging. Other digital delivery methods included web-based educational materials, social media, phone applications, online forums and online conversational agents. Studies with longer engagement that utilised blended delivery showed greater weight loss.

CONCLUSION

More effective interventions appear to combine both traditional and digital delivery methods. More research is needed to adequately test effective delivery modalities across a diverse range of digital delivery methods, as high heterogeneity was observed across the small number of included studies.

Learning from the process evaluation of a complex, pre-conception randomised controlled trial in Malaysia: the Jom Mama project

Background

Seen from a life-course perspective, pre-conception interventions are essential to reduce transmission to the next generation of obesity as a risk factor for later non-communicable diseases. The Malaysian Jom Mama project investigated the effectiveness of a combined behaviour change communication and e-health intervention in young married couples prior to first pregnancy. This paper reports on the extensive process evaluation (PE) that accompanied the Jom Mama trial.

Methods

In accordance with the realistic evaluation approach, a programme theory was developed for the Jom Mama project, based on key functions selected for six PE sub-studies, namely: recruitment; attrition; behaviour change communication (BCC); e-health (the Jom app); peer-support for community health promoters (CHPs); and contextual factors. The results of the first four sub-studies are reported here. Three cycles of data collection were conducted based on triangulation and a mixed-methods approach.

Results

The findings permitted distinguishing between theory and implementation challenges in interpreting the outcome of the Jom Mama trial.1 Recruitment and attrition proved to be challenges, and although the PE allowed Jom Mama investigators to improve procedures in order to achieve a sufficient sample size, it also has implications for engaging this age group in future pre-conception interventions. PE sub-studies showed that there were challenges in applying the BCC, and that the uptake of the Jom app varied. In one way this can be seen as an indication of limited fidelity, but it also leads to questions about how best to change the communication culture within the Malaysian health care system.

Conclusions

The Jom Mama PE highlighted the challenges of recruiting newly-wed couples for a pre-conception intervention. Despite thorough intervention development preparations, the PE revealed the difficulty of lifestyle behaviour change through Malaysian community health wokers who were trained on new communication strategies combined with e-health solutions, and that six intervention sessions of eight months do not constitute a sufficient dose to affect change. <div style=“page-break-after: always;”></div>