. 2022 Apr 27;94(8):3776–3782. doi: 10.1002/jmv.27799

Table 1.

Relative risk of SARS‐CoV‐2 breakthrough infection in nursing home residents.

	RR	CI 95%
Age (>87 vs. ≤87)^a	1.20	0.97–1.98
Sex (female vs. male)	1.26	1.03–1.54
SARS‐CoV‐2 infection status before outbreak declaration (naïve vs. experienced)^b	1.82	1.47–2.26
LFIC test at 3 months after full vaccination (negative vs. positive)	2.86	1.82–4.50

Abbreviations: CI, confidence interval; LFIC, lateral flow immunochromatographic assay detecting IgG antibodies against SARS‐CoV‐2 Spike protein; RR, relative risk; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2.

^{^a}

Median age of participants was set to establish comparison groups.

^{^b}

According to the electronic Valencia Health System Integrated Databases (VID).