An ideal screening test would be accurate, practical, and motivational.
Accuracy is an important aspect of what should be sought after in a screening test.
There's no need for the screening test to be practical.
The man is old
An old woman is folding clothes.
The men all want to run down the street to scare children.
There's no information relevant to the issue available.
they sit in the dark room
President Attends the World Cup Final and Watches for Two Hours.