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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Neurobiol Aging. 2012 Oct 27;34(5):1519.e5–1519.e12. doi: 10.1016/j.neurobiolaging.2012.10.003

Table 3.

C90RF72 repeat mean copy count and distribution comparisons in the range of normal repeat copy variation (≤4–23 repeats). (A) Case-control comparisons, (B) Ethnic comparisons

Comparisons N Average repeats KS-test T-test
(A) Case-Control status * cases controls cases controls Dn p t P
African American (AA) 292 620 6.64 6.76 0.07 0.220 −0.68 0.495
European descent (ED) 1257 1039 6.81 7.08 0.05 0.141 −2.00 0.046
All (AA+ED) 1549 1659 6.78 6.96 0.05 0.073 −1.71 0.087
(B) AA vs. EDethnicity * AA ED AA ED Dn p t P
Controls 620 1039 6.76 7.08 0.11 1.9E-04 −2.17 0.0305
Cases 292 1257 6.64 6.81 0.10 0.015 −1.02 0.3080
All, (Cases+Controls) 912 2296 6.72 6.93 0.11 1.5E-07 −1.96 0.0498
*

samples with >30 repeats were excluded.