No, those aren't polling numbers from American Samoa.

Those are the worst-case computed results of each candidate's risk of having a heart attack over the next 10 years, using a popular heart-health assessment tool known as the Framingham Risk Score. This data was first surfaced by the brilliant folks at The Wall Street Journal Health Blog.

The Journal reports:

"According to the most recent data in his medical record, McCain is a 71-year-old male, and apparent non-smoker with total cholesterol of 192, HDL cholesterol of 42, and blood pressure of 134/84. He is taking two pills known as diuretics commonly prescribed for blood pressure, but his doctor said they are for kidney stones.

"His 10-year risk of death or heart attack: 17% - or 22% if you consider the diuretics as treating his blood pressure.

"Obama's data: He is a 46-year-old male, smoking status not clear, with total cholesterol of 173, HDL cholesterol of 68 and blood pressure of 90/60. He isn't taking blood pressure drugs.

"His 10-year risk: 1% of you consider him a non-smoker; 3% if you think he still sneaks a smoke now and then despite his doctor's assessment that he is successfully refraining from smoking with the help of Nicorette gum."

The most important factor influencing the difference in risk? Age, the Journal blog reports. Adjust for McCain's age by assuming he's as old as Obama, and McCain's risk drops to 4 percent.

Whether you're running for President or not, you can compute your 10-year heart attack risk using the Framingham Heart Risk tool.