did not reach statistical significancep -value = 0.14
The mediation analysis showed that although mtDNA-CN affects the risk of MI (OR = 1.48) and MI via a risk of future HF (OR = 8.0), the indirect effect of MI on the association between mtDNA-CN and HF was small and did not reach statistical significance (OR = 1.06; p -value = 0.14) ( Supplementary Table 1 and Figure 3 ).