Computed Tomography Images under the Nomogram Mathematical Prediction Model in the Treatment of Cerebral Infarction Complicated with Nonvalvular Atrial Fibrillation and the Impacts of Virus Infection

Table 1

Calculation methods of CHADS₂ score and derivative scores.

CHADS2		CHA2DS2		R2CHADS2
Risk factors	Score (s)	Risk factors	Score (s)	Risk factors	Score (s)
CHF	1	CHF	1	CHF	1
Diabetes	1	Diabetes	1	Diabetes	1
Age ≥75 years	1	Age ≥75 years	2	Age ≥75 years	1
Hypertension	1	Hypertension	1	Hypertension	1
Stroke/transient ischemic attack	2	Stroke/transient ischemic attack	2	Stroke/transient ischemic attack	2
		65 < age ≤ 75	1	Estimated glomerular filtration rate (GFR) ≤ 60	2
		Vascular disease	1
		Female	1
Total scores	6	Total scores	9	Total scores	8

Note: CHA₂DS₂ refers to CHF, hypertension, age ≥75 years [doubled], diabetes, stroke/transient ischemic attack. R₂CHADS₂ refers to renal dysfunction, CHF, hypertension, age ≥75 years, diabetes, stroke/transient ischemic attack.