Factors influencing healthy dietary behavior changes among patients with gestational diabetes mellitus during pregnancy: A meta-synthesis using the theoretical domains framework.

AIMS: To examine factors that facilitate and impede healthy dietary behavior modification in patients with gestational diabetes mellitus (GDM). Additionally, it sought to assess the strength of the evidence for these factors and offer insights into promoting positive behaviors.

METHODS

This systematic review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses reporting standards. We searched seven databases in February 2023 to include qualitative studies related to patients with GDM that explored their perceptions of and changes in healthy eating behaviors. Two researchers independently screened the articles, assessed their quality, extracted data, and coded the factors using the theoretical domain framework. For the factors involved, we performed a meta-synthesis based on their frequency and assigned a confidence level to determine their level of evidence.

RESULTS

We included 32 of the 536 extracted articles. Barriers identified by high levels of evidence include: "Environmental context and resources," "Social influences," "Knowledge," "Emotion," and "Social/professional roles and Identity." The facilitators identified by high levels of evidence include the following: "Beliefs about consequences," "Social influences," "Environmental context and resources," "Skill," and "Memory, attention, and decision processes."

CONCLUSION

This meta-synthesis highlights that healthy eating behavior change is influenced by the interaction of factors at different levels of individuals, organizations, and sociocultural environments. Furthermore, we established a framework that displayed the associations between these factors, giving prominence to those with higher levels of evidence. This framework will aid researchers in identifying priority areas for intervention and facilitating the implementation of high-quality strategies.