I like your avatar , but your math has me scratching my head. It looks like you took the 9% from one group and added it to 45% from the other group to come up with 54%. I think what the figures show is that 91% of the group that took baking soda did not have a rapid progression of their disease, while 55% of the control group who did not take baking soda did not have a rapid progression of their disease.