It is an important point but we cant at the moment say anything about that, he said. The study was not set up to look at any differences between the two. The Pfizer/BioNTech was available first so there is more data, but the Oxford/AstraZeneca was mostly used in the older age group. That rose to more than 85% after the second dose. The numbers were very small and there was uncertainty over their significance, said the researchers.
The study wasn’t certain if it was significant.
( z0 know :ARG0 ( z1 study ) :ARG1 ( z2 truth-value :polarity-of ( z3 significant :ARG1 ( z4 it ) ) ) :polarity - )
(z0 / know-01
    :ARG0 (z1 / study-01)
    :ARG1 (z2 / truth-value
              :polarity-of (z3 / significant-02
                               :ARG1 (z4 / it)))
    :polarity -)
The study wasn’t certain if it was significant .
z0 :polarity 0
z0 :ARG0 z1
z0 :ARG1 z2
z3 :ARG1 z4
z2 :polarity-of z3