Table 6.
Pairwise comparison (events per 100,000 persons per week) of the Pfizer/BioNtech and the Sinopharm vaccines (a) and Unvaccinated versus Sinopharm vaccinated individuals (b) in age cohorts > 50 and < 50 showing the rates of infections, hospitalisations, ICU admissions and deaths, p values and odds ratios.
| Pfizer-BioNTech vs Sinopharm (after Jan 30) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ALL | Over 50 | Under 50 | ||||||||||
| Rate (Pfizer) | Rate (Sino) | p | OR | Rate (Pfizer) | Rate (Sino) | p | OR | Rate (Pfizer) | Rate (Sino) | p | OR | |
| Infections | 136.28 | 350.53 | < .001 | 0.44 | 128.44 | 366.57 | < .001 | 0.39 | 139.65 | 345.52 | < .001 | 0.46 |
| Hospitalisations | 2.82 | 28.36 | < .001 | 0.13 | 6.59 | 62.11 | < .001 | 0.12 | 1.74 | 14.74 | < .001 | 0.17 |
| ICU admissions | 0.08 | 2.29 | < .001 | 0.04 | 0.36 | 6.62 | < .001 | 0.06 | 0.0 | 0.49 | 0.034 | 0.00 |
| Deaths | 0.22 | 1.64 | < .001 | 0.15 | 0.96 | 5.45 | < .001 | 0.18 | 0.0 | 0.16 |
NS 0.16 |
0.00 |
| Unvaccinated vs Sinopharm (after Jan 30th) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ALL | Over 50 | Under 50 | ||||||||||
| Rate (Unvax) | Rate (Sino) | p | OR | Rate (Unvax) | Rate (Sino) | p | OR | Rate (Unvax) | Rate (Sino) | p | OR | |
| Infections | 642.96 | 350.53 | < .001 | 1.72 | 781.32 | 366.57 | < .001 | 2.02 | 631.66 | 345.52 | < .001 | 1.70 |
| Hospitalisations | 51.06 | 28.36 | < .001 | 1.78 | 225.55 | 62.11 | < .001 | 3.49 | 33.98 | 14.74 | < .001 | 2.35 |
| ICU admissions | 6.39 | 2.29 | < .001 | 2.70 | 41.44 | 6.62 | < .001 | 5.92 | 2.65 | 0.49 | < .001 | 5.09 |
| Deaths | 4.42 | 1.64 | < .001 | 2.72 | 37.17 | 5.45 | < .001 | 6.56 | 1.35 | 0.16 |
NS 0.07 |
7.65 |
All rates are events per 100,000 of the sample population. Note that the p values for the comparison were all < 0.01, except ICU admissions in “under 50” cohort and deaths for the Sinopharm versus Pfizer comparison and Sinopharm versus Unvaccinated comparison (in bold). Note that early recipients of Sinopharm (Dec 9th–Jan 30th) were eliminated from the analysis, since Pfizer vaccination began on Jan 30th. Comparisons between vaccines between April 1–July 17th (when AZ/Covishield and Sputnik V were deployed) are in Supplementary Tables.