Table 2.

Results of the main self-controlled case-series analysis

	Number of events	Patient-days	Crude incidence (per 1000 patient-days)	Incidence rate ratio (95% CI)	P-value
BNT162b2 (n = 662)
Baseline	580	195 945	3
First dose
0–13 days after	18	9015	2	0.48 (0.23–1.02)	0.06
14–27 days after	12	5112	2.3	0.40 (0.18–0.93)	0.03
Second dose
0–13 days after	25	7228	3.5	0.87 (0.50–1.52)	0.63
14–27 days after	27	6687	4	1.13 (0.70–1.84)	0.61
CoronaVac (n = 1102)
Baseline	987	324 557	3
First dose
0–13 days after	27	14 724	1.8	0.43 (0.24–0.75)	<0.01
14–27 days after	28	12 414	2.3	0.54 (0.33–0.90)	0.02
Second dose
0–13 days after	30	10 062	3	0.73 (0.46–1.16)	0.19
14–27 days after	30	9571	3.1	0.83 (0.54–1.29)	0.41

CI = confidence interval.