Table 2.

Comparison of different indicators before and during the outbreak of COVID-19.

Quality Indicator	2019 (SD)	2020 (SD)	Difference (95% CI)	p-Value
AMI07	92.0 ± 2.4%	91.8 ± 2.4%	0.2 (−1.9~2.2)	0.896
EDL01	3.00 ± 0.11%	2.95 ± 0.15%	0.05 (−0.07~0.15)	0.431
EDR02	2.33 ± 0.17%	2.10 ± 0.14%	0.23 (0.04~0.15)	0.002 **
HSM02	2.12 ± 0.15%	2.16 ± 0.20%	−0.04 (−0.19~0.10)	0.546
HSUR01	1.32 ± 0.08%	1.23 ± 0.08%	0.09 (0.03~0.15)	0.008 **
SCM02	0.90 ± 0.20‰	0.88 ± 0.20‰	0.02 (−0.02~0.02)	0.838
SCR01	0.72 ± 0.05%	0.63 ± 0.07%	0.09 (0.04~0.14)	0.003 **
STK03	7.08 ± 1.21%	8.50 ± 1.08%	−1.42 (−2.40~−0.45)	0.006 **

Abbreviations: AMI07: Proportion of ST elevation myocardial infarction patients receiving primary percutaneous coronary intervention within 90 min after arrival at the ER; EDL01: proportion of patients leaving emergency room without complete treatment; EDR02: unscheduled returns within 72 h for emergency patients; HSM02: in-hospital mortality rate excluding critical discharge against medical advice; HSUR01: unscheduled returns within 14 days for hospitalized patients; SCM02: mortality within 48 h for surgical patients excluding critical discharge against medical advice; SCR01: unscheduled returns to the operating room for surgical patients during hospitalization; STK03: proportion of acute ischemic stroke patients receiving IV-tPA; SD: standard deviation; CI: confidence interval; Student’s t-test. ** p < 0.01