Table 2.

Results of log-link Poisson regression and Cox proportional regression by the different start dates of follow-up of control.

	Start date of controls' follow-up
	June 4, 2020	January 1, 2020
Adjusted IRR (95 CI)*	0.78 (0.48–1.27)	1.13 (0.71–1.81)
Adjusted IRR (95 CI)†	0.60 (0.35–1.03)	0.98 (0.60–1.60)
Adjusted HR (95 CI)‡	0.47 (0.06–3.50)	1.58 (0.68–3.67)

IRR, incidence rate ratio; HR, hazard ratio.

^*Adjusted for age and sex.

^†Adjusted for age, sex, place of residence, and income level.

^‡Adjusted for demographic variables, health behaviors (drinking alcohol frequency and smoking history), comorbidities (diabetes mellitus, heart disease, hypertension, and dyslipidemia), anthropometric values (body mass index, glomerular filtration rate, gamma-glutamyl transferase level, hemoglobin level, and height), and covariates (family history of heart disease).