But they report a four to eight times improvement in performance.

Of those, 81 percent reported continued improvement a year or more later.

But by three to six months, patients in both groups reported marked improvement.

Still, many parents who have tried the diet reported an improvement in their child's behavior.

Based on their own reports three months later, nine of the patients reported lasting improvement.

Some patients reported small improvements in appetite, pain, and weight, but they did not last.

Other teachers reported similar improvements after moving to the Welsh board.

Thus, if 100% of the panel reported an improvement the index would be 100.0.