During Stage 2, the parent and child return for clinic visits aiming to maintain treatment targets for increasingly longer intervals: two visits 2 weeks apart, then two visits 4 weeks apart, then two visits 8 weeks apart, and finally two visits 16 weeks apart. The schedule normally takes a year or more. The importance of this procedure is shown by a report that half of children during Stage 2 fail to meet treatment targets at least once during Stage 2.