The report of a research study on a new medication to treat hypertension included this statement: "there was no significant difference in gender or age between the treatment and control groups." based on the statement, the reader of the report recognizes that gender and age were

Why do governments supply public goods and services instead of selling them to those people who use them

Persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research was approved.persons who are under 18 years of age.persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research will be conducted.persons who are under 21 years of age.

When were criminals first used to create a system to catch other criminals