 The researchers also compared Wikipedia to Medscape Drug Reference (MDR), by looking for answers to 80 different questions covering eight categories of drug information, including adverse drug events, dosages, and mechanism of action.They have determined that MDR provided answers to 82.5 percent of the questions, while Wikipedia could only answer 40 percent, and that answers were less likely to be complete for Wikipedia as well.None of the answers from Wikipedia were determined factually inaccurate, while they found four inaccurate answers in MDR.