Table 1 Questions and statements and their response options in the questionnaire

Are there any guidelines at your clinic/work place for use of ultrasound in pregnancy from the second trimester?

• Clinic guidelines^a

• Regional guidelines^a

• National guidelines^a

From your own experience, to what extent are these guidelines followed?

• Clinic guidelines^b

• Regional guidelines^b

• National guidelines^b

In your view, how many ultrasound examinations are medically indicated in an uncomplicated pregnancy?

• Number of ultrasounds

Statements about the use of ultrasound

• Obstetric ultrasound examinations are often performed for non-medical purposes in my country^c

• Pregnant women should be able to have non-medical ultrasounds on their own request^c

• Commercialisation of ultrasound is a problem in my country^c

• Commercialisation of ultrasound is a problem in my hospital/clinic^c

• Do you feel that pregnant women expect to have an ultrasound during consultations, even when there is no medical indication for ultrasound?^c

Statements on technical developments in maternity care

• Maternity care providers may trust ultrasound above clinical examinations in pregnancy^c

• Increasing use of obstetric ultrasound may result in less focus on clinical skills^c

• The use of ultrasound has contributed to medicalisation of pregnancy^c