Fig. 1
From: Common variants in SIRT1 and human longevity in a Chinese population
Pairwise linkage disequilibrium (LD) of the 8 SNPs in the SIRT1 gene under study. LD was measured by the D’ and r 2statistics using the data from all subjects. The colors indicate the strength of pairwise LD. The darker color the higher the D’ or r 2. a. D’ values b. r 2 values Notes: For D’, a value of 100 reflects complete dependency between markers; For r 2, a value of 100 reflects perfect dependency between markers. (SHEsis Software, ver. online)