The date a resource (article, book, video, etc.) was created is important in medical fields research. Outdated information can negatively impact your understanding of a topic and be harmful to patients.
In general, do not use resources that are over 5 years old. There are three primary exceptions:
- You are writing a paper about the history of medicine, and need historical information included.
- You are making an argument that relies on highlighting the history of a medical topic.
- There is no new research on your topic. In which case, be up front about the age of your resources.
Library tools and Google Scholar make it easy to limit your results by date. Find the date filter. It will vary depending on what tool you are in, but it may include a date slider, a field to type a date into, a calendar to select a date, or a drop down where you can select "within the past 5 years."