Source(s)

Population Estimates Program [Internet]. U.S. Census Bureau; Available from: http://www.census.gov/popest/estimates.php

Calculation(s) by Book of Odds Based On

Rosamond W, Flegal K, Furie K, Go A, Greenlund K, Haase N, et al.; American Heart Association Statistics Committee and Stroke Statistics Subcommittee. 'Heart Disease and Stroke Statistics--2008 Update' Circulation 117(4) 2008: pgs e25-e146.

Definitions

The diagnosis of overt vascular disease of the brain was based on the occurrence of stroke. Minimal criteria of nonhemorrhagic stroke consisted of the sudden onset of a localizing neurologic deficit (such as hemiparesis, aphasia, homonymous hemianopia); for stroke due to intracranial hemorrhage, a change in the state of consciousness, headache, and signs of meningeal irritation in association with bloody spinal fluid under increased pressure with or without other localizing neurological deficits. A diagnosis of embolus to the brain was made if a source for embolus (i.e., atrial fibrillation, rheumatic heart disease with mitral stenosis, recent MI, bacterial endocarditis) was present, the clinical course consistent (i.e., rapid onset and clearing, slightly bloody spinal fluid, a more localized deficit), or the occurrence of associated peripheral emboli elsewhere noted. A consultant neurologist and the clinical staff of the study reviewed hospital and clinic protocols. Starting after Original Cohort Exam 8, they have examined patients in the hospital with stroke.

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Odds Statement provided by Book of Odds Inc., http://www.bookofodds.com/content/view/full/392291 (Accessed: )

Rounding Rules

Odds more likely than 1 in 10, such as 1 in 3.42, are rounded to three significant digits. Odds less likely than 1 in 10, such as 1 in 420.4, are rounded to four significant digits. Trailing zeros after the decimal point are dropped for readability, even though they may still be significant.

Odds you'll see: 1 in 4.26; 14.5; 143; 5,230; 433,200

Odds you won't see: 1 in 2.412; 63.042; 425,242c