. Author manuscript; available in PMC: 2009 Dec 1.

Published in final edited form as: Exp Gerontol. 2008 Aug 26;43(12):1102–1107. doi: 10.1016/j.exger.2008.08.047

Table 3.

Percentage of variation of bilirubin concentrations explained by classical factors and the −53(TA-repeat) and the T-3279G polymorphism (assuming a recessive genetic model). Values given are the r² values (as percentage) from linear regression with various adjustments.

	r² (%) full model ^a	r² (%) submodel ^b	r² (%) explained by polymorphisms ^c
−53(TA-repeat) polymorphism
Cases	24.1	8.7	15.4
Controls	23.6	10.5	13.1
SNP T-3279G
Cases	17.9	8.7	9.2
Controls	17.0	10.5	6.5
−53(TA-repeat) polymorphism and SNP T-3279G combined
Cases	24.1	8.7	15.4
Controls	24.1	10.5	13.6

adjusted for age, gender, smoking status, and either of the two polymorphisms or the two polymorphisms combined;

same as ^a but without adjustment for any polymorphism;

The variation explained by the polymorphisms was calculated by the difference of r² between a full model ^a and the submodel ^b.