Effects of contact tracing and nucleic acid testing on the COVID-19 outbreak in Zunyi, China: data-driven study using a branching process model

Table 1 Characteristics of patients and their matched controls

Characteristics	Overall	Control group	Case group	P-value
N	60 (100%)	48 (80%)	12 (20%)
Age, years	66.0 (60.0, 70.0)	65.0 (58.0, 70.0)	69.0 (65.8, 73.2)	0.095
Sex
Female	40 (66.7%)	32 (66.7%)	8 (66.7%)	> 0.999
Male	20 (33.3%)	16 (33.3%)	4 (33.3%)
Vaccine status
Unvaccinated	5 (8.3%)	2 (4.2%)	3 (25.0%)	0.049
Vaccinated	55 (91.7%)	46 (95.8%)	9 (75.0%)
Dose
0	5 (8.3%)	2 (4.2%)	3 (25.0%)	0.172
1	1 (1.7%)	1 (2.1%)	0 (0.0%)
2	52 (86.7%)	43 (89.6%)	9 (75.0%)
3	2 (3.3%)	2 (4.2%)	0 (0.0%)

Values are given as N (%) or median (Inter-Quartile Range, IQR). ^†P value was calculated by the χ² test or the Wilcoxon test

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