The main objective is to assess whether there are factors associated with women's refusal to participate in a randomized clinical trial involving first-trimester screening for pre-eclampsia. The secondary objective is to qualitatively evaluate the reasons for acceptance and refusal to participate.

1. Determine the acceptance/refusal rate among all women identified, eligible and offered RCT.

2. Comparison of demographic characteristics between the two groups

   • Group 1: women accepting to participate in RCT
   • Group 2: women refusing to participate in RCT

3. Assessment of motivations for acceptance (based on questionnaire given to women who agree to participate)

4. Evaluation of reasons for refusal to participate - obstacles (based on the questionnaire given to women who refuse to participate).

Inclusion Criteria :

Inclusion criteria are the same as for the RANSPRE trial.

Any pregnant woman is eligible if:

• monofetal pregnancy
• between 11 and 14 weeks
• legal age
• health insurance coverage

Exclusion Criteria :

Inclusion criteria are the same as for the RANSPRE trial. A history of pre-eclampsia in a previous pregnancy and a contraindication to aspirin are non-inclusion criteria.

Women identified and eligible to participate in the RANSPRE trial within the Port-Royal maternity ward and having their T1 ultrasound scan within the maternity ward will be included.