Skip to main content
. Author manuscript; available in PMC: 2010 May 6.
Published in final edited form as: Stat Sci. 2009 Nov 1;24(4):561–573. doi: 10.1214/09-STS290

Table 2.

Cumulative power to detect association (α=5×10−8) at a risk allele with frequency 0.20 and 0.40, and allelic odds ratios of 1.1 and 1.2, given sample sizes for the WTCCC, DGI and FUSION studies.

Studies Risk allele frequency Allelic odds ratio Cumulative n cases Cumulative n controls power
WTCCC 0.20 1.10 1924 2938 0.0002
WTCCC+DGI 0.20 1.10 3388 4405 0.0011
WTCCC+DGI+FUSION 0.20 1.10 4549 5579 0.0033
WTCCC 0.40 1.10 1924 2938 0.0007
WTCCC+DGI 0.40 1.10 3388 4405 0.0054
WTCCC+DGI+FUSION 0.40 1.10 4549 5579 0.0166
WTCCC 0.20 1.20 1924 2938 0.0333
WTCCC+DGI 0.20 1.20 3388 4405 0.2078
WTCCC+DGI+FUSION 0.20 1.20 4549 5579 0.4426
WTCCC 0.40 1.20 1924 2938 0.1336
WTCCC+DGI 0.40 1.20 3388 4405 0.5468
WTCCC+DGI+FUSION 0.40 1.20 4549 5579 0.8219