Tom van de Belt did some research into hospital social media use including comparing the US use compared with the Europeans. They put out this infographic that describes the details of one of his papers.
It shouldn’t be a huge surprise that US hospitals are behind on social media use. I’m sure some of it can be chalked up to our litigious society. Although, I’m sure there are some hospital culture elements at play as well.
Most of those hospital social media users aren’t really engaging the patients with social media either. They are just using social media as a broadcast channel.