Risk of PCa as estimated by mtDNA copy number in subgroups of cases and controls with selected characteristics.

Abbreviations: PCa = prostate cancer; mtDNA = mitochondrial DNA; OR = odds ratio; CI = confidence intervals; BMI = body mass index.aCases and controls were dichotomized based on the median mtDNA copy number in controls.bAnalyses were performed using unconditional models adjusted for age, BMI, daily dietary fat intake, smoking status and family history of PCa where appropriate.cThe three categories of low, moderate and high are defined in Table 1.Risk of PCa as estimated by mtDNA copy number in subgroups of cases and controls with selected characteristics.