Figure 3From: Association of leukocyte mitochondrial DNA content with glioma risk: evidence from a Chinese case–control study Association between leukocyte mitochondrial DNA (mtDNA) copy number and subsequent risk of glioma. mtDNA copy number and odds ratio (OR) values were transformed to common logarithm. There was an S-shaped relationship between mtDNA copy number and glioma risk (P for nonlinearity = 0.009).Back to article page