alt Hacker News> Because physical exams are performed in mobile vans in NHANES, data could not be collected in northern latitudes during the winter
Why not?
> Because physical exams are performed in mobile vans in NHANES, data could not be collected in northern latitudes during the winter
Why not?
Probably due to road conditions during the winter season. Imagine asking someone who isn't used to driving on icy roads to drive a large van full of equipment up through the Rockies