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Comparison of CHADS2 and CHADS2VASC2 NAMCS 2010 Data
| Risk level and score | CHADS2 | CHADS2VASC2 | % Difference (Relative) | |||
|---|---|---|---|---|---|---|
| % Risk category | % Warfarin prescription | % Risk category | % Warfarin prescription | Risk category | Warfarin prescription | |
| High Stroke Risk (≥2 points) | 53.1 | 25.1 | 85.5 | 18.8 | 46.7 | 28.7 |
| Intermediate Stroke Risk (1 point) | 34.8 | 12.2 | 9.7 | 19.9 | 112.8 | 48.0 |
| Low Stroke Risk (0 points) | 12.1 | 2.5 | 4.8 | 1.3 | 86.4 | 63.2 |
