Table 1.

Overview of the studies included in this systematic review.

Reference	Country	Data Collection Time	Sample Size (N)	Age, Mean (Standard Deviation)	Study Design	Sampling Method	Response Rate (%)	COVID-19 Vaccination Uptake, % (n/N)	Publication
Hosokawa et al. [34]	Japan	28 July to 30 August 2021	1621	<29 years, 35.6%; ≥29 years, 64.4%	Cross-sectional	Convenience sampling	73.9	13.4 (217/1621)	Journal
Rottenstreich et al. [27]	Israel	19 January to 27 April 2021	1775	30.6 (5.8) for vaccinated and 29.5 (6) for unvaccinated	Cohort	NR	NR	40.2 (712/1775)	Journal
Taubman et al. [28]	Israel	March to April, 2021	860	28.3 (4.4)	Cross-sectional	Convenience sampling	65	45.2 (389/860)	Journal
Blakeway et al. [33]	United Kingdom	March to July, 2021	491	35 (NR) for vaccinated and 33 (NR) for unvaccinated	Cohort	NR	NR	28.5 (140/491)	Journal
Wainstock et al. [29]	Israel	January to June, 2021	4399	30.6 (5.3) for vaccinated and 28.2 (5.7) for unvaccinated	Cohort	NR	NR	20.8 (913/4399)	Journal
Razzaghi et al. [31]	USA	14 December 2020 to 8 May 2021	135,968	18–24 years, 13.9%; 25–34 years, 61.3%; 35–49 years, 24.8%	Cohort	NR	NR	16.3 (22,163/135,968)	Journal
Lipkind et al. [30]	USA	15 December 2020 to 22 July 2021	46,079	32.3 (4.5) for vaccinated and 29.8 (5.3) for unvaccinated	Cohort	NR	NR	21.8 (10,064/46,079)	Journal
Stock et al. [35]	Scotland	1 December 2020 to 31 October 2021	131,751	NR	Cohort	National data	NA	9.5 (12,518/131,751)	Journal
UK Health Security Agency [7]	United Kingdom	January to August 2021	355,299	NR	Cohort	National data	NA	7 (24,759/355,299)	Journal
Goldshtein et al. [26]	Israel	March to September 2021	24,288	31.6 (5.2) for vaccinated and 30.5 (5.7) for unvaccinated	Cohort	NR	NR	68.7 (16,697/24,288)	Journal
Siegel et al. [32]	USA	June to August 2021	473	33 (4.5) for vaccinated and 31.4 (5.6) for unvaccinated	Cross-sectional	Convenience sampling	69.7	49.3 (233/473)	Pre-print service

NA, not applicable; NR, not reported.