Table 4.

Risk of admission to hospital within 14 days of a positive covid-19 test result in vaccinated and unvaccinated people aged 80 years and older

	BNT162b2				ChAdOx1-S
	Total No of cases	No (%) admitted to hospital	Hazard ratio (95% CI)		Total No of cases	No (%) admitted to hospital	Hazard ratio (95% CI)
Unvaccinated	8892	1365 (15.35)	1.00		8892	1365 (15.35)	1.00
Test date after first dose:
<14 days	2084	293 (14.06)	0.98 (0.86 to 1.11)		562	64 (11.39)	0.98 (0.78 to 1.24)
≥14 days	1400	128 (9.14)	0.57 (0.48 to 0.67)		126	9 (7.14)	0.63 (0.41 to 0.97)
Total	123 76	1786 (14.43)			9580	1438 (15.01)