[phxaz]

"I would say that the utility of screening procedures in any setting is totally dependent upon their statistical predictive value, would you agree? ."

totally? no. see how directly and clearly i answered your question? let me ask mine again: do you think infirm elderly should be exempt from security checks?

[yatros from flatwater]

Well, let's put it this way. Which would be more likely to result in a lower risk of "home invasion"?

a) Installing steep, narrow entrance stairs to ward off the infirm elderly burglar

or

b) Making it plain that the residents of the home are armed