But they didn't even check the Vitamin D levels. They only checked patients that had Vitamin D levels checked by physicians. So presumably this was a different

But they didn't even check the Vitamin D levels. They only checked patients that had Vitamin D levels checked by physicians. So presumably this was a different population that was more sick by definition, because their physicans were checking them for Vitamin D deficiency. There aren't many good inpatient indications for checking Vitamin D. It's check for not good reasons sometimes, but most likely these patients were being followed by an outpatient doctor who was looking for something to explain some symptom, test result or problem that they were having.