question about measurements

[Guest guest]

Anybody know what normal ranges are and what exactly these

measurements are measuring?

My son recently had measurements retaken. Cephalic Index went from

77.0 to 83 with a +1 standard deviation. What does Cephalic Index

measure, I have no idea and what is the standard deviation refer to?

Since I saw the cephalic index go up, I was concerned, but then told

the standard deviation is +1, so its good. Can anyone explain this?

His traditional CVA went from 7 to 6. What does CVA measure? What

is normal?

His mid-face asymmetry went from 2 to 4. That does not seem good to

me. Wasn't 2 in the normal range and now that went up. What exactly

does mid-face measure? He has fuller cheek on rt. and rt. ear is

pushed forward.

His skull base asymmetry went from 4 to 3. Some numbers went down by

1, but some went up. Anyone ever experience this?

Donna