Even so, in a recent survey done at the University of Chicago Medical Center, 45 percent of internists who filled out the anonymous questionnaire said they had used a placebo at some time during their clinical practice.

CNN: Doctors admit prescribing placebos

To describe the prevalence of binge drinking, the CDC analyzed data from its 2011 Behavioral Risk Factor Surveillance System, an annual telephone survey, and the national 2011 Youth Risk Behavior Survey, an anonymous questionnaire completed by high school students nationwide.

CNN: CDC: 1 in 5 high school girls binge drink

He penned a special note on the front page of the questionnaire warning the judge and attorneys that it will be impossible for him to remain anonymous because NBC employees who report to him will be in the courtroom covering the trial.

CNN: Spector murder trial: Jury familiar with guns, drugs, celebrities