Cost-effectiveness analysis on COVID-19 surveillance strategy of large-scale sports competition

Table 4 COVID-19 transmission and cost effectiveness of different scenarios

Scenario	Initial infections	COVID-19 transmission				Cost effectiveness
		Accumulative infection	Accumulative unfounded number	Accumulative detection ratio/%	Symptom detection ratio/%	Total cost (million dollars)	CER (million dollars)	ICER (million dollars)
		Accumulative infection	Accumulative unfounded number	Accumulative detection ratio/%	Symptom detection ratio/%	Total cost (million dollars)	CER (million dollars)	Scenario 1–9^a	Scenario 1, 10^b
1	90	2369.70	681.70	71.23	17.62	133.94	0.0565	–	–
2	90	2145.60	586.30	72.67	16.48	115.33	0.0538	–	0.0830
3	90	1825.90	490.40	73.14	14.19	92.20	0.0505	–	0.0768
4	90	1409.40	378.00	73.18	10.80	65.43	0.0464	–	0.0713
5	90	1006.20	241.26	76.02	6.13	41.59	0.0413	–	0.0677
6	90	641.22	132.40	79.35	3.30	22.68	0.0354	–	0.0644
7	90	368.10	46.46	87.38	1.18	10.34	0.0281	–	0.0617
8	90	293.68	28.90	90.16	0.82	9.17	0.0312	–	0.0601
9	90	268.15	25.58	90.46	0.71	9.19	0.0343	–	0.0594
10	90	890.51	145.62	83.65	5.58	31.49	0.0354	0.0693	–
11	90	822.96	137.25	83.32	5.51	28.96	0.0352	0.0653	0.0375
12	90	779.79	127.54	83.64	5.20	27.31	0.0350	0.0620	0.0378
13	90	665.88	102.69	84.58	4.17	22.45	0.0337	0.0578	0.0403
14	90	562.55	84.06	85.06	2.80	18.15	0.0323	0.0528	0.0407
15	90	450.17	60.56	86.55	1.83	13.66	0.0303	0.0472	0.0405
16	90	320.90	30.44	90.51	0.99	8.92	0.0278	0.0301	0.0396
17	90	290.44	26.47	90.89	0.74	9.33	0.0321	−0.0476	0.0369
18	90	266.93	24.18	90.94	0.69	9.31	0.0349	−0.0924	0.0356

ICER, Incremental cost-effectiveness ratio; CER, Cost-effectiveness ratio
^aThese comparisons were Scenario 1–9 without strengthening close-contact control. ^bThese comparisons were Scenario 1 and Scenario 10 (once NAT weekly)

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