An inventory of reasons for sperm donation in formal versus informal settings.

The shortage of sperm donors in formal settings (i.e., assisted reproduction clinics) and the availability of sperm donors in informal settings (such as through contacts on the internet) motivated us to investigate why men may prefer either a formal or an informal setting for sperm donation.

A taxonomy of possible reasons for and against sperm donation.

Objective: Various reasons may guide the decision of men to become a sperm donor. Our aim was to identify a comprehensive set of possible reasons for and against sperm donation.

Design: Concept mapping.