Q: I read the “ Override and selective control ” article you wrote in 2017. I just have a couple of questions about the low-select control you and Simon Lucchini described when discussing override and ...

The CONTROL statement declares control variables and specifies their values. A control variable is like a parameter except that it has a fixed value and is not estimated from the data.

Then an example of variable selection with four response variables and two methods is given and we conclude by making some recommendations for their routine use. The Statistician joined the Journal of ...

S. D. Walter, Matched Case-Control Studies with a Variable Number of Controls per Case, Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 29, No. 2 (1980), pp. 172-179 ...