TABLE 5.

Confidence in synthesised qualitative findings for ‘high’ importance TDF domains

COM‐B	TDF domain, definition (component constructs)	Finding	Number of studies (N) (participants)	Confidence and explanation
Capability (Psychological)	Knowledge	(Lack of) knowledge of specific health behaviour recommendations to prevent future T2DM risk (Lack of) knowledge of link between GDM and future T2DM risk	19 (444) Bandyopadhyay 2015; Gaudreau; Hjelm 2007; Hjelm 2012; Hjelm 2018; Ingol; Jones 2015; Kilgour; Mohd Suan; Nielsen 2015; Oza Frank; Pace; Pinidiyapathirage; Rafii; Razee; Stotz; Sunny; Tang; Whitty Rogers 6 (149) Bernstein & Gunn; Krompa; Mohd Suan; Pace; Rafii; Pace	High confidence: Finding is supported by 19 studies with moderate methodological concerns, and no or very minor coherence, adequacy and relevance concerns High confidence: Finding is supported by six studies with minor methodological concerns and no or very minor coherence, adequacy and relevance concerns
	Behavioural regulation	Planning and engaging with postpartum health behaviour recommendations Sustaining lifestyle changes made during pregnancy	16 (354) Bandyopadhyay 2015; Campbell; Gaudreau; Hjelm Hjelm 2012; 2018; Jones 2012; Kilgour; Krompa; Muhwava; Oza Frank; Pace; Pinidiyapathirage; Rafii; Razee; Tang; Whitty Rogers 2016 6(93) Bandyopadhyay 2011; Hjelm 2007; Hjelm 2012; Hjelm 2018; Pinidiyapatharige; Whitty Rogers	Moderate confidence: Finding is supported by 16 studies with moderate methodological concerns, no or minor coherence concerns, minor adequacy concerns and no or very minor relevance concerns High confidence: Finding is supported by six studies with minor methodological concerns and no or very minor coherence, adequacy and relevance concerns
Opportunity (Physical)	Environmental Context and Resources	Competing demands Education and resources Environment and accessibility of facilities	16 (529) Bandyopadhyay 2015; Bernstein & Gunn; Campbell; Ingol; Jones 2015; Mathew; Mohd Suan 2015; Oza Frank; Pace; Pinidiyapathirage; Rafii; Razee; Sunny; Tang; Tewari 14(319) Bandyopadhyay 2011; Bandyopadhyay 2015; Campbell; Doran; Gaudreau; Ingol; Jones 2015; Krompa; Nielsen 2015; Pace; Pinidiyapathirage; Razee; Tewari; Zulfiqar 15(473) Bernstein & Gunn; Campbell; Ingol; Jones 2015; Mathew; Mohd Suan; Muhwava; Oza Frank; Pace; Pinidiyapathirage; Rafii; Sakeena; Sunny; Tewari; Whitty Rogers	High confidence: Finding is supported by 16 studies with moderate methodological concerns, no or very minor coherence, adequacy and relevance concerns High confidence: Finding is supported by 14 studies with minor methodological concerns, no or very minor coherence, adequacy and relevance concerns Moderate confidence: Finding is supported by 15 studies with moderate methodological concerns, no or very minor coherence and adequacy concerns and minor relevance concerns
Opportunity (Social)	Social Influences	Finding value in the health advice of HCPs Seeking social/emotional, pragmatic and peer support from family and friends to enable postpartum health behaviours Respecting social norms of a women's cultural group	23(518) Campbell 2017; Bandyopadhyay 2015; Bernstein & Gunn; Doran; Gaudreau; Hjelm 2007; Hjelm 2012; Hjelm 2018; Ingol; Kandasamy; Kilgour; Krompa; Mathew; Muhwava; Nielsen 2015; Oza Frank; Parsons; Pinidiyapathirage; Rafii; Sakeena; Sunny; Tewari; Zulfiqar 19 (543) Campbell; Bandyopadhyay 2011; Bandyopadhyay 2015; Gaudreau; Ingol; Jones 2015; Krompa; Mathew; Mohd Suan; Oza Frank; Pace; Pinidiyapathirage; Rafii; Razee; Sakeena; Sunny; Tewari; Whitty Rogers; Zulfiqar 5(160) Ingol; Jones; Neufeld; Pinidiyapathirage; Zulfiqar	High confidence: Finding is supported by 23 studies with minor methodological concerns, no or very minor coherence, adequacy and relevance concerns High confidence: Finding is supported by 19 studies with minor methodological concerns, no or very minor coherence, adequacy and relevance concerns High confidence: Finding is supported by five studies with minor methodological concerns, no or very minor coherence, adequacy and relevance concerns
Motivation (Automatic)	Emotion	Fear screening procedure or T2DM diagnosis, or that T2DM management will be the same as GDM management Impact of early parenthood and migrant experience on emotions including postpartum abandonment	9(162) Bernstein&Gunn; Campbell; Doran; Hjelm 2007; Neufeld; Pinidiyapathirage; Rafii; Sakeena; Sunny 6(148) Campbell; Hjelm 2012; Muhwava; Parsons; Razee; Zulfiqar	High confidence: Finding is supported by nine studies with minor methodological concerns, no or very minor coherence, adequacy and relevance concerns Moderate confidence: Finding is supported by six studies with moderate methodological concerns, no or very minor coherence and adequacy concerns and minor relevance concerns
Motivation (Reflective)	Beliefs about Consequences	Beliefs about the impact of postpartum health behaviours on women's daily lives Beliefs about importance of postpartum health behaviours and future T2DM risk Cultural beliefs, norms and myths about diet and exercise in the postpartum period	20(509) Bandyopadhyay 2011; Bandyopadhyay 2015; Campbell; Doran; Gaudreau; Hjelm 2018; Ingol; Jones 2012; Jones 2015; Krompa; Muhwava; Neufeld; Oza Frank; Pinidiyapathirage; Razee; Sakeena; Sundarapperuma; Sunny; Tewari; Zulfiqar 17 (300) Bandyopadhyay 2011; Bandyopadhyay 2015; Bernstein&Gunn; Doran; Ingol; Jones 2015; Krompa; Mathew; Muhwava; Neufeld; Pinidiyapathirage; Rafii; Sakeena; Sundarapperuma; Sunny; Tang; Zulfiqar 4(82) Krompa; Pinidiyapathirage; Sundarapperuma; Zulfiqar	High confidence: Finding is supported by 20 studies with moderate methodological concerns, no or very minor coherence, adequacy and relevance concerns Moderate confidence: Findings is supported by 17 studies with moderate methodological concerns, no or very minor coherence, adequacy and relevance concerns Moderate confidence: Finding is supported by four studies with moderate methodological concerns, no or very minor coherence and concerns, minor adequacy concerns and moderate relevance concerns
	Social/Professional Role and Identity	Placing one's healthcare needs secondary to those of the newborn and secondary to family and cultural norms and needs	19(376) Bandyopadhyay 2011; Bandyopadhyay 2015; Boyd; Campbell; Jones 2012; Jones 2015; Mathew; Muhwava; Pinidiyapathirage; Razee; Sakeena; Sundarapperuma; Sunny; Tang; Tewari; Zulfiqar	High confidence: Finding is supported by 19 studies with moderate methodological concerns, no or very minor coherence, adequacy and relevance concerns
	Beliefs about Capabilities	Perceived (in)ability to manage T2DM risk, perceived inevitability of T2DM Lack of confidence in capability to adhere to postpartum health behaviour recommendations	7(151) Bandyopadhyay 2015; Bernstein&Gunn; Campbell; Hjelm 2018; Jones 2012; Jones 2015; Razee; 6(103) Bandyopadhyay 2011; Doran; Hjelm 2007; Jones 2012; Pinidiyapathirage; Whitty Rogers	High confidence: Finding is supported by seven studies with minor methodological concerns, no or very minor coherence and adequacy concerns and minor relevance concerns Moderate confidence: Finding is supported by six studies with minor methodological concerns, minor coherence concerns, moderate adequacy concerns and no or very minor relevance concerns