Background Difference-in-differences is a method commonly used in population health research. It is based on assumptions that ...

Brette Sember is a retired attorney who has been writing and editing law and legal topics for more than 25 years. She is the author of more than 40 books, is a nationally recognized expert on divorce ...

Accounting methods refer to the basic rules and guidelines under which businesses keep their financial records and prepare their financial reports. There are two main accounting methods used for ...

Our goal is to create a highly visible forum for the presentation of novel methods, because we believe that major methodological developments often take their roots in the cross-fertilization of ...