There are times in my research papers that I need to cite generally accepted facts. For example, health care costs are rising. The CDC and other large organizations often create "fact sheets" with dozens of facts about a topic. Many times these are only published as a webpage. Going through the references to find and interpret the original research is time consuming and seems excessive. For example, I might introduce a paper with "here are some facts about rising healthcare costs" to lead into the main research which is a method to help address those costs.
I've used these fact sheets previously in conference papers, but I'm curious if they are generally accepted by journals or if they are considered a weak source.