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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Am Geriatr Soc. 2010 Mar;58(3):501–509. doi: 10.1111/j.1532-5415.2010.02739.x

Table 3.

Paired t-test analyses of lipid values for twin pairs discordant for dementia.

Variable N pairs Mean Difference untransformed Mean Difference log transformed t p
HDL 17 0.024 0.009 0.176 0.863
ApoA1 21 0.030 --- 0.566 0.578
ApoB 21 0.103 0.078 2.362 0.028
ApoB/ApoA1 21 0.069 0.069 1.692 0.106
Triglycerides 21 0.067 0.017 0.164 0.871
Total cholesterol 21 0.395 --- 2.363 0.028

Note. log = natural log of values. T-tests for differences between log transformed variables shown where transformation applied. The lipids values for the unaffected twin were subtracted from their affected cotwin where positive differences indicate higher lipid values associated with dementia status.