The relative risk or odds ratio for Sudden Infant Death Syndrome (SIDS) and infants that sleep prone is approximately 6.

Dose-response relationship

Explanation:

Many babies suffers from sudden infant death syndrome or popularly known as SIDS. It is an unexplained death of babies while sleeping.

In the given context, the supportive or the ancillary criteria which is addressed in the context is the dose - response relationship.

The dose-response relationship describes the amount of response of any organisms which is a function of doses or exposure to the stressor or a stimulus.

Studying of dose - response relationship, it is useful in determining the safe, beneficial levels, hazardous and the dosage of drugs, foods, pollutants or other substances where other organisms are exposed to.