Income and Education as Predictors of Stroke Mortality after the Survival of a First Stroke

Table 2

Relative risk of dying after a stroke (𝑛=10,487).

	Stroke-specific mortality			Other causes of death than stroke
	Model 1	2	3	1	2	3
		RR			RR
		(P value)			(P value)
Education	𝑃=𝟎.𝟎𝟎𝟔		𝑃=0.392	𝑃=0.070		𝑃=0.313
Compulsory	1 (ref)		1 (ref)	1 (ref)		1 (ref)
Upper secondary	0.81; (0.098)		0.89; (0.384)	1.04; (0.651)		1.14; (0.129)
University	0.54; (0.002)		0.77; (0.203)	0.80; (0.055)		1.06; (0.652)
Income (quartiles)		𝑃<𝟎.𝟎𝟎𝟏	𝑃<𝟎.𝟎𝟎𝟏		𝑃<𝟎.𝟎𝟎𝟏	𝑃<𝟎.𝟎𝟎𝟏
1 (lowest)		1 (ref)	1 (ref)		1 (ref)	1 (ref)
2		0.53; (<0.001)	0.53; (<0.001)		0.58; (<0.001)	0.60; (<0.001)
3		0.42; (<0.001)	0.43; (<0.001)		0.31; (<0.001)	0.30; (<0.001)
4		0.21; (<0.001)	0.22; (<0.001)		0.32; (<0.001)	0.31; (<0.001)
Stroke category	𝑃=𝟎.𝟎𝟑𝟑	𝑃=0.105	𝑃=0.108	𝑃<𝟎.𝟎𝟎𝟏	𝑃=𝟎.𝟎𝟎𝟓	𝑃=𝟎.𝟎𝟎𝟓
Cerebral infarction	1 (ref)	1 (ref)	1 (ref)	1 (ref)	1 (ref)	1 (ref)
Subarachnoid haemorrhage	0.53; (0.008)	0.60; (0.031)	0.60; (0.033)	0.56; (<0.001)	0.63; (0.003)	0.63; (0.003)
Intracerebral haemorrhage	1.07; (0.699)	1.11; (0.534)	1.11; (0.517)	1.15; (0.209)	1.18; (0.145)	1.18; (0.143)
Stroke, not specified (I64)	1.24; (0.385)	1.17; (0.518)	1.17; (0.530)	1.10; (0.523)	1.03; (0.853)	1.03; (0.843)

Controlling for sex, age, age square, stroke category, days of inpatient care, and days square. “Ref” is the reference category. The 𝑃 value to the right of the variable name shows whether the variables have made a significant contribution to the model. Results in bold have 𝑃<0.05.
RR: relative risk. RR > 1.0 means higher likelihood of dying.