The finding came from a doctoral thesis that followed 1,090 stroke cases in western Sweden.
As part of the Sahlgrenska Academy Study on Ischemic Stroke (SAHLSIS), Petra Redfors examined the long-term prognosis for 1,090 victims of ischemic stroke before the age of 70 and compared the results with 600 controls.
According to her findings, 36 per cent of patients who were living alone, as opposed to 17 per cent of those with partners, died within 12 years after stroke. Among men, the gap widened to 44 per cent vs 14 per cent.
"Among the conceivable causes are that people who live alone lead less healthy lives, are less prone to take their medication and tend to wait longer before going to the emergency room," Redfors said.
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"For the healthy controls, excess mortality was also greater among men, particularly those living alone," said Redfors.
Multiple risk Etiology played a key role as well - having had a stroke due to large vessel disease, a blood clot from the heart or diabetes was an additional risk factor.
"The pattern of excess mortality among people who live alone showed up here as well," Redfors said.
"Among the other risk factors for recurrence were the severity of the original event, along with diabetes or coronary artery disease. Physical inactivity increased the risk of cardiac infarction after stroke," said Redfors.
The thesis also found that a large percentage of stroke victims were still experiencing memory, concentration, cognitive and other loss at 7-year follow-up. Because many of them are of working age, the personal and social impact is enormous.