There are always risks when interpreting data from a descriptive study such as this one.

Such descriptive studies do not at this time use health control groups and can only generate hypotheses,but not test them.

Studies of drug use would generally fall under descriptive studies.

These descriptive studies do not establish efficacy because of the absence of an appropriate control group.

Much of our existing knowledge has been gathered from descriptive studies which lack controls and proper sampling procedures.

Evidence from ecological, natural history, or descriptive studies.

The bishops offered their full cooperation in the descriptive study, which they said should include statistics on perpetrators and victims.

A descriptive study of urban school counseling programs.

A descriptive study of individuals successful at long-term maintenance of substantial weight loss.

"I would hope by this modest descriptive study to put things on an empirical footing."