Lifestyle Factors and Early Clinical Outcome in Patients With Acute Stroke: A Population-Based Study

Background and Purpose-We examined the associations of individual and combined lifestyle factors with early adverse stroke outcomes. Methods-A total of 82 597 patients were identified from nationwide registries. Lifestyle factors at the time of stroke admission included body mass index (kg/m(2)), smoking habits, and alcohol intake, which were grouped (healthy, moderately healthy, moderately unhealthy, and unhealthy). The associations between lifestyle and outcomes were examined using multivariable regression. Results-A total of 18.3% had a severe stroke, 7.8% pneumonia, 12.5% urinary tract infection, and 9.9% died within 30 days. The association between lifestyle, stroke severity, and mortality, respectively, differed according to sex. Unhealthy lifestyle was associated with lower risk of severe stroke (adjusted odds ratio [OR], 0.73; 95% confidence interval [CI], 0.63-0.84) and 30-day mortality among men (adjusted OR, 0.71; 95% CI, 0.58-0.87), but not among women (severe stroke: adjusted OR, 1.14; 95% CI, 0.85-1.55, and mortality: adjusted OR, 1.34; 95% CI, 0.90-1.99). No sex differences were found for pneumonia and urinary tract infection. Unhealthy lifestyle was not associated with a statistically significant increased risk of developing in-hospital pneumonia (adjusted OR, 1.30; 95% CI, 0.98-1.73) or urinary tract infection (adjusted OR, 0.98; 95% CI, 0.72-1.33). Underweight was associated with a higher 30-day mortality (men: adjusted OR, 1.71; 95% CI, 1.50-1.96, and women: adjusted OR, 1.46; 95% CI, 1.34-1.60). Conclusions-Healthy lifestyle was not associated with a lower risk of adverse stroke outcomes, in particularly among men. However, underweight may be a particular concern being associated with an increased risk of adverse outcomes among both sexes.