Valid and reliable public health data are becoming more difficult to obtain through random-digit dial (RDD) telephone surveys. As a result, researchers are evaluating different survey designs (i.e., sampling frame and survey mode combinations) as complements or alternatives to RDD....

In this article, we have compared the census X12 and Tramo / Seats additive ARIMA(p,d,q) seasonal adjustment models applied to distressed securities and long/short equity hedge funds categories. We have applied two methodologies. The first one is developed by the US Bureau of the Census X12...