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TABLE XI. CHI-SQUARE DISTRIBUTION UPPER LIP TO Sn-Pog PLANE
CAUCASIANS

N=40

# %
AFRICAN AMERICANS

N=40

# %
Pre- and Post Treatment within Desirable Range
Improved with Treatment
Pre- and Post Treatment out of Desirable Range
Pre-treatment Within and Post-treatment out of Desirable Range
9 22.5
7 17.5
13* 32.5
11*** 27.5
16 40
8 20
9** 22.5
7**** 17.5

* Ten started less protrusive and finished less protrusive. Three started more protrusive and finished more protrusive.

** Seven started less protrusive and finished less protrusive. Two started more protrusive and finished more protrusive.

***Eleven finished less protrusive.

**** Five finished less protrusive. Two finished more protrusive.