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Hemoglobin Variables for Cardiopulmonary Bypass
| Variable | Cases (stroke)
|
Controls (no stroke)
|
p Value | ||||
|---|---|---|---|---|---|---|---|
| Mean | Range | SD | Mean | Range | SD | ||
| Hemoglobin level | |||||||
| Pre-CPB | 11.1 | 4 to 16.2 | 2.08 | 11.4 | 5.7 to 17.3 | 1.93 | 0.08 |
| Post-CPB | 8.7 | 4 to 11 | 1.09 | 9.0 | 5 to 12 | 1.09 | 0.0002 |
| Difference | 2.4 | −3 to 7 | 1.97 | 2.4 | −4.1 to 10.2 | 1.94 | 0.75 |
CPB = cardiopulmonary bypass; SD = standard deviation.
