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. 2021 Sep 16;28(1):116–119. doi: 10.1016/j.jiac.2021.09.009

Table 2.

Multivariate analysis for differences in sex, age, and doses; reactogenicity following two doses of the BNT162b2 mRNA COVID-19 vaccine.


Female (reference: male)
Age (unit change: one year older)
Dose 2 (reference: dose 1)
Reactogenicity Odds ratio 95% CI p value Odds ratio 95% CI p value Odds ratio 95% CI p value
pain (injection site) 1.48 1.26 1.73 <0.001 0.99 0.98 1.00 0.001 0.82 0.70 0.95 0.010
swelling 1.42 1.27 1.59 <0.001 0.98 0.98 0.99 <0.001 1.71 1.54 1.90 <0.001
burning sensation 1.56 1.39 1.75 <0.001 0.97 0.97 0.98 <0.001 1.54 1.38 1.71 <0.001
redness 1.58 1.38 1.82 <0.01 0.98 0.98 0.99 <0.001 2.04 1.80 2.32 <0.001
induration 1.27 1.10 1.46 0.001 1.00 1.00 1.01 0.163 1.18 1.04 1.34 0.012
itching 3.66 2.99 4.48 <0.001 1.01 1.00 1.01 0.070 1.76 1.52 2.05 <0.001
fatigue 1.47 1.31 1.66 <0.001 0.99 0.98 0.99 <0.001 7.18 6.43 8.02 <0.001
muscle pain 1.59 1.42 1.77 <0.001 0.97 0.97 0.98 <0.001 0.95 0.86 1.05 0.334
headache 2.46 2.16 2.81 <0.001 0.99 0.98 0.99 <0.001 5.43 4.80 6.14 <0.001
fever 1.80 1.55 2.09 <0.001 0.97 0.96 0.97 <0.001 27.38 22.00 34.06 <0.001
chills 1.88 1.61 2.19 <0.001 0.98 0.97 0.99 <0.001 16.49 13.53 20.11 <0.001
joint pain 2.02 1.73 2.35 <0.001 0.98 0.98 0.99 <0.001 8.49 7.21 9.99 <0.001
nasal discharge 1.71 1.12 2.63 0.014 1.01 1.00 1.03 0.152 1.46 1.01 2.11 0.046