. 2021 Mar 13;196:107788. doi: 10.1016/j.buildenv.2021.107788

Table 2.

Number of cases and susceptible patrons at non-A tables in different zones of Restaurant X. There were a total of 79 patrons at the other 17 tables.

Category of zones	Zones	Number of patrons	Number of infected cases	Attack rate (%)	RD* (95% CI)	χ²	P
Table A neighbors	Immediate neighboring tables	16	5	31.25	31.25 (8.54, 53.96)	16.08^#	<0.001^#
Table A neighbors	Remote neighboring tables	63	0	0	31.25 (8.54, 53.96)	16.08^#	<0.001^#
Air conditioning	ABC zone	11	5	45.45	45.45 (16.03,74.88)	25.78^#	<0.001^#
Air conditioning	Non-ABC zone	68	0	0	45.45 (16.03,74.88)	25.78^#	<0.001^#

*RD: Rate difference.

# Chi-squared test with continuity correction.