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Characteristics of the study population by quartile of county-level stroke mortality as calculated from U.S. Vital Statistics, 2005-2007 and 2008-2010.10,11
| Quartile of County Stroke Mortality | |||||
|---|---|---|---|---|---|
| Q1 (n = 7,357) | Q2 (n = 7,468) | Q3 (n = 7,395) | Q4 (n = 7,430) | ||
| Age (mean ± SD) | 65.4 ± 9.4 | 65.1 ± 9.5 | 64.8 ± 9.4 | 64.3 ± 9.3 | |
| Male (%) | 47.9 | 45.3 | 43.2 | 43.3 | |
| Black (%) | 41.7 | 40.5 | 41.2 | 41.1 | |
| Region of the Nation (%) | Buckle | 4.9 | 16.6 | 28.5 | 33.6 |
| Belt | 11.9 | 34.7 | 40.4 | 51.6 | |
| Rest of Nation | 83.2 | 48.7 | 31.1 | 14.8 | |
