Infants who are put to bed prone less than half the time have an increased incidence of sids compared to those who are never put to bed prone. those who are always put to bed prone have an increased incidence of sids compared to those who are put to bed prone less than half the time

The answer to this question would be: dose-response relationship.

Explanation:

The dose-response relationship is a research technique in which a response to an exposure to a certain situation, or treatment, also a substance, is sought out. As such, the outcome may be known and the researchers seek to know the relationship between the situation, event, or substance, and the outcome that is expected. It is almost an establishment of cause and effect. The patient, in this case, is a baby, and the event that is being expected is the appearance, or absence, of the SIDS syndrome. The event that would lead to this outcome is the exposure to the prone, vs prone-less position in bed. What is being done in this case is known as the dose-response relationship.