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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Am J Ophthalmol. 2008 Jul 30;146(5):747–751. doi: 10.1016/j.ajo.2008.05.047

Table 1.

Demographic and ocular characteristics of American Indian/Alaskan Natives (AI/AN), African American, and White participants.

AI/AN
(n=429)		 African American
(n=33)		 White
(n=46)
Age 55.7 +/- 11.6 53.0 +/- 9.2 54.7 +/- 9.6
(range) (40-88) (40-76) (41-81)
% Female 63% 53.6% 63.0%
% AIAN N/A N/A
Unknown 27 (6.1%) - -
<25% 55 (12.4%) - -
25% ≤ % < 50% 15 (3.4%) - -
50% ≤ % < 75% 76 (17.1%) - -
≥ 75% 271 (61.0%) - -
Mean* CCT 554.8 +/- 33.9 528.5 +/- 33.2 551.9 +/- 28.3
(range) (range= 451.5-646) (range= 460.5-577.5) (range= 502-615)
Mean* Keratometry (mm) 785.8 +/- 27.2 - -
*

Average of right and left eyes

N/A= Not applicable (not collected from African American and White participants)