We obtained regression coefficients for the variables by multivariable logistic regression analysis and proposed a risk score formula: risk score = – 9.139 + 0.046 (age) + 0.902 (if congestive heart failure was positive) + 0.774 (if previous AIS/TIA was true) + 0.208 (NIHSS score) + 0.008 (CRP) + 0.017 (BNP). Here, CRP is linked to congestive heart failure.