What about the absolute numbers?
1 is close to an 86% reduction of 2.
"A total of 622,701 participants met the eligibility criteria. Of those, 85,314 (14%) received a bivalent-booster during the 70-day study period. Hospitalization due to Covid-19 occurred in 6 bivalent recipients and 297 participants who did not.
73 deaths/537,837 unboosted vs 1 death/ 85,314 boosted
85K is 1/6th of 537K so 1x6 gives 73 vs 6
from the pre-print: “study commenced on Sep. 24, 2022, when the bivalent vaccination campaign was initiated in CHS. The bivalent vaccine supplier was Pfizer-BioNTech. Participants were followed until Dec. 12, 2022, and for at least 14 days after vaccination. The data extraction date was Dec. 14, 2022”
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4314067
comorbidities included asthma, CHF, CRF, COPD, Diabetes, Hypertension, IHD, obesity, history of CVA and history of smoking