https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2819558 https://jamanetwork.com/journals/jamanetworkopen/fullarticle... gives the actual formula in

https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2819558 https://jamanetwork.com/journals/jamanetworkopen/fullarticle... gives the actual formula in "BRI Definition " for the curious. (wonder if they needed to specify the unit in the first place since lengthes end up being divided together. Maybe to avoid people using different units for height and waist length?)