What is the difference of reading medical journals or medical publications?

What is the difference of reading medical journals or medical publications than that say popular science or scientific American.



Or is medical journals or medical publications more for doctors and people who know alot about it and popular science or scientific American try to explain it in simpler terms for less scientific knowledge people.What is the difference of reading medical journals or medical publications?
I just grabbed an old jounal from the library to give you an example. The first article in the December 2007 Annals of Emergency Medicine is "Survival Outcomes with the Introduction of Intravenous Epinephrine in the Management of Out-of-Hospital Cardiac Arrest" by MEH Ong, EH Tan, FSP Ng, et. al.. It gives an abstract. Then it describes the purpose of the study and its methodology, selection of participants, methods of measurement and data collection, and outcome measures. It discusses data analysis and their interpretation of the results, along with the limitations of the study. And then it gives the data, for others to re-interpret. All of that being done, there's a further discussion of the study, its findings and implications.

You'll note that this is somewhat more focused and detailed than a general synopsis of some broad topic written for popular consumption.