Table 4 Open in new tab Univariate and...

	SCD risk—Hazard ratio	ACM risk—Hazard ratio
Q1	2.82 (2.62–3.0)	2.17 (2.01–2.34)	2.20 (2.15–2.26)	1.72 (1.67–1.76)
Q2	1.96 (1.81–2.12)	1.72 (1.59–1.86)	1.66 (1.62–1.71)	1.46 (1.43–1.50)
Q3	1.36 (1.25–1.47)	1.32 (1.21–1.44)	1.25 (1.22–1.29)	1.23 (1.20–1.27)
Q4	1.0 (Ref.)	–	–	–

	SCD risk—Hazard ratio	ACM risk—Hazard ratio
Q1	2.82 (2.62–3.0)	2.17 (2.01–2.34)	2.20 (2.15–2.26)	1.72 (1.67–1.76)
Q2	1.96 (1.81–2.12)	1.72 (1.59–1.86)	1.66 (1.62–1.71)	1.46 (1.43–1.50)
Q3	1.36 (1.25–1.47)	1.32 (1.21–1.44)	1.25 (1.22–1.29)	1.23 (1.20–1.27)
Q4	1.0 (Ref.)	–	–	–

Table 4

Univariate and multivariable Cox analyses of sudden cardiac death and all-cause mortality risk across income quartiles

	SCD risk—Hazard ratio		ACM risk—Hazard ratio
Income group	Univariate	Multivariable^a	Univariate	Multivariable^a
Q1	2.82 (2.62–3.0)	2.17 (2.01–2.34)	2.20 (2.15–2.26)	1.72 (1.67–1.76)
Q2	1.96 (1.81–2.12)	1.72 (1.59–1.86)	1.66 (1.62–1.71)	1.46 (1.43–1.50)
Q3	1.36 (1.25–1.47)	1.32 (1.21–1.44)	1.25 (1.22–1.29)	1.23 (1.20–1.27)
Q4	1.0 (Ref.)	–	–	–

	SCD risk—Hazard ratio		ACM risk—Hazard ratio
Income group	Univariate	Multivariable^a	Univariate	Multivariable^a
Q1	2.82 (2.62–3.0)	2.17 (2.01–2.34)	2.20 (2.15–2.26)	1.72 (1.67–1.76)
Q2	1.96 (1.81–2.12)	1.72 (1.59–1.86)	1.66 (1.62–1.71)	1.46 (1.43–1.50)
Q3	1.36 (1.25–1.47)	1.32 (1.21–1.44)	1.25 (1.22–1.29)	1.23 (1.20–1.27)
Q4	1.0 (Ref.)	–	–	–

ACM, all-cause mortality; SCD, sudden cardiac death.

^aThe multivariable Cox analysis was adjusted for age, sex, and comorbidities (heart failure, arrhythmia, ischaemic heart disease, cardiomyopathy, peripheral artery disease, diabetes mellitus, chronic obstructive pulmonary disease, cancer, cerebrovascular disease, epilepsy, liver disease, neurological disease, psychiatric disease, and sleep apnoea).

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