Table 1: Change objectives for all pregnant women (PO1 is a selective prevention method; PO2, PO3 and PO4 are indicated prevention methods).

	Knowledge	Attitude			Risk- perception	Self- Efficacy	Social Influence
		General	Self-disclosure	Help- seeking			Social support	Professional support midwife	Social norm
PO1. Pregnant women identify factors that trigger MD	Point out which factors can trigger MD	Express that personal life issues can have an impact on emotional wellbeing during pregnancy			Explain which factors in their personal life (can) trigger MD during pregnancy	Express confidence in identifying factors in their life that trigger MD	Express feeling supported by their friends and relatives in identifying factors in their life that trigger MD	Identify their midwife as a trustworthy professional to consult regarding factors that trigger MD Identify their midwife as a trustworthy professional source of information regarding factors that trigger MD Express feeling supported by their midwife in identifying factors that trigger MD in their own life	Explain that identifying pregnant women that are at-risk for MD is a task of the midwife
PO2. Pregnant women decide to express that they experience MD (self-disclosure)	Explain that self-disclosure can reduce MD during pregnancy Report that having a sense of meaning/purpose can contribute to self-disclosure of MD during pregnancy	Express that their own wellbeing, that of their baby and family, are meaningful reasons to disclose to others when experiencing MD	Report the importance of sharing problems and signs and symptoms of MD with others	Report that professional help as a consequence of self-disclosure is positive	Report the positive and negative consequences of self-disclosure Report personal reasons to self-disclose	Express confidence in disclosing to others when experiencing MD	Express feeling supported by their friends and relatives in disclosing to them when experiencing MD	Express feeling supported by their midwife in disclosing to her when experiencing MD	Explain that encouraging women in talking about MD is a task of the midwife
PO3. Pregnant women actively handle MD in their daily life (self-management)	Explain effective and ineffective coping mechanism to deal with MD during pregnancy Report that having a sense of purpose can contribute to self-management of MD during pregnancy	Express the importance of effective coping (skills) with MD during pregnancy	Report the importance of sharing problems and symptoms and signs of MD with others	Report the importance of asking for support Express that support in coping with MD is positive		Express confidence in self-managing/coping with MD	Express feeling supported by their friends and relatives in coping with MD	Express feeling supported by their midwife in coping with MD	Explain that coaching women in the self-management of MD is a task of the midwife
PO4. Pregnant women seek professional support for MD when needed (help-seeking)	Report the availability of different screening instruments to determine appropriate support for MD Explain different professional support options and resources for MD Report that having a purpose can contribute to self-disclosure			Express positive aspects of seeking professional support for MD Express the importance of seeking professional support for MD	Report whether professional support involves positive and/or negative consequences for MD and their daily functioning	Express confidence in finding appropriate professional support for MD	Express feeling supported by their friends and relatives in seeking appropriate professional support for MD Express that their personal environment provides support when seeking professional support	Express feeling supported by their midwife when discussing professional support for Express feeling supported by their midwife when exploring appropriate professional support for MD	Explain that advising pregnant women about professional support of MD is a task of the midwife Explain that referring pregnant women suffering from MD to other caregivers is a task of the midwife

* MD: Maternal Distress