Supplementary Material 1. EMODON Questionnaire (Last Revision: June 2024)

EMODON STUDIO

Title of the study	Study on motivations and emotional experiences in egg donors in Spain EMODON Study: Emotional Donors
Protocol code	MR48
Promoter	Instituto Bernabéu / Fertty Clinic
Principal Investigators	Marta Guerri Pons and Natalia Romera Agulló

Age
Country of origin
Do you have any children?	YES	NO
Have you donated eggs more than once? If so, how many times?

What motivated you to donate eggs? (You can select more than one option.)	The possibility of helping other women
	Financial compensation
	Knowing if I am fertile
	Others

How long did it take from the time you decided to donate until you completed the process?	Between one and two months
	Between two and four months
	More than four months

Did you have any doubts when making the decision?	YES	NO
Have you shared your intention to donate with anyone (family, friends, etc.)?	YES	NO
If the previous answer is affirmative, have you felt supported?	YES	NO
Before starting the egg donation process, did you have any concerns or fears?	YES	NO

If the previous answer is yes, please indicate what your main concerns were (multiple options may be selected)
Possible changes in my fertility in the future.
The possibility of an unwanted pregnancy during treatment.
The fact of going through an operating room.
The risks or side effects of anesthesia.
The medication injections.
The effect of hormones on my body.
Not injecting myself properly
Possible pain during treatment.
The possibility of being diagnosed with a serious hereditary disease.

The emotional impact of knowing that there could be a child genetically related to me in the world.
Others (please specify). _______________________________________________

How would you describe your emotional state during the donation process? (multiple options can be selected)	Stable, as always
	More nervous
	More irritable
	More distressed
	Others
And after the donation process? (multiple options can be selected)	Peaceful
	Nervous
	Irritable
	Distressed
	Others

Do you think the donation process has had any impact on your emotional or psychological well-being?	Yes
	No
Did you feel supported by the professionals?	Yes
	No

I've never thought about it.

If the law were to change and anonymity were to disappear, how would you feel? (multiple options can be selected)	I trust that it would not affect me because the current law is anonymous.
	It wouldn't influence me.
	I would be worried
	I would not perform a new donation cycle

What changes would you suggest to improve emotional and psychological support for egg donors?

Any other comments or suggestions you'd like to share?