As for the tree - ring analysis, I'm learning more about this now — we're just at the beginning of a three - year NSF - funded project — but, so far, it seems like one of those statistical problems that's easy to state but hard to solve, involving a sort of multilevel modeling of splines that's never been done before. (andrewgelman.com)
When dealing with multilevel marketing companies, it can be hard to gain a refund. (dietsinreview.com)
Patients» experience and satisfaction in primary care: secondary analysis using multilevel modelling (bmjopen.bmj.com)