“…The formative research methods included focus group discussions, in‐depth interviews, and Trials of Improved Practices. Four used the Theory of Planned Behaviour (Ajike et al, 2020 ; Downs et al, 2019 ; Gu et al, 2016 ; Rempel et al, 2017 ), two used the Theory of Reasoned Action (Hoddinott et al, 2018 ; Nguyen et al, 2018 ), two used Social Cognitive Theory (Rabiepoor et al, 2019 ; Singla et al, 2015 ), two used the socioecological model (DeLorme et al, 2018 ; Mukuria et al, 2016 ), two used theoretical concepts related to social support and social networks (Bootsri & Taneepanichskul, 2017 ; Martin et al, 2017 ), one used the transtheoretical model (Salasibew et al, 2019 ), and one used the Beliefs, Attitudes, Subjective Norms and Enabling Factors (BASNEF) model (Akbarzadeh et al, 2015 ). Four studies based intervention design on multiple theories and constructs (Aidam et al, 2020 ; Aubel, 2012 ; Hoddinott et al, 2018 ; H. S. Kim et al, 2016 ; Nguyen et al, 2019 ).…”