When you need statistical information, a good first place to go is:
On biomedical topics, you might be interested in, for example, the percentage of people in the U.S. with an ambulatory disability or a market forecast for medical devices. Both are covered in Statista.
As you use Statista, you may notice that many tables come from government agencies. This can help point to an office likely to have more information on your topic. Government statistics are often --- but not always --- supplied for free. Here are some pages pointing to other sources:
Our Government Documents & Information library guide includes these pages:
