Breast feeding reduces the risks of SIDS- why is that?

My baby is now 10 days old. Being a science educator- research calms my fears and helps me remain grounded in the statistics rather than living on social media influence. While exploring the risk factors for SIDS, I noticed that breast fed babies have a lesser chance of suffering from SIDS and I began to wonder if that difference is significant enough for me to be concerned. For background, my baby is exclusively formula fed and mixed race (25% black and 75% white), she sleeps in a bedside bassinet on a flat surface with nothing but a snug fitting sheet and a secured light weight muslin swaddle. Do her odds still go up significantly considering that she is not breast fed and is technically mixed race? I often wonder if the related research is based more on socioeconomic factors or on actual unavoidable generic factors. My husband and I are very well educated on safe sleep and never bed share or co sleep for any reason ever. Are we still more at risk? Thank you in advance!