Table 1.

Overview of the P4HP-intervention

Session	Time	Goal(s)	Activities	Tool
1. Early nutritional information with midwife (4-10 weeks of participants’ pregnancy)
A) Individual setting	15 min	Gain insight into perspectives of the women towards nutrition and create a sense of urgency for healthy nutrition during pregnancy Identify aspects that go well regarding nutrition and define at least one achievable step the woman is willing to work on Create a positive attitude towards nutritional changes Understand the complexity of each woman’s situation regarding healthy nutrition	First interview on nutrition	Visual aid to guide the interview and write down action points Motivational Interviewing
2. Appointment with dietitian (~ 12 weeks of participants’ pregnancy)
A) Individual setting	30-45 min	Support women in developing strategies to cope with individual challenges Provide more in-depth information	Discuss challenges in healthy nutrition based on the woman’s individual needs	Visual aid to guide the interview and write down action points
B) Group setting	60 min	Support women in developing strategies to cope with individual challenges Provide more in-depth information Peer support and learn from each other’s questions and experiences	Workshop with group discussions on challenges in healthy nutrition based on the women’s individual needs Use each other’s experiences to find individual coping mechanisms	Visual aid to guide the interview and write down action points
3. Reflection moments with midwife (~ 22 and ~ 32 weeks of participants’ pregnancy)
A) Individual setting	15 min	Increase awareness of the connection between the women’s actions and results on diet quality Increase abilities to identify actionable and achievable goals that lead to improved diet quality	Facilitate women’s reflection on their nutrition and the efforts they made in the last weeks Identify next steps for improvement, if achievable at that moment
B) Group setting	30 min	Increase awareness of the connection between the women’s actions and results on healthy nutrition Increase abilities to identify actionable and achievable goals that lead to improved diet quality Peer support and learn from each other’s questions and experiences	Facilitate women’s reflection on their nutrition and the efforts they made in the last weeks Identify next steps for improvement, if achievable at that moment