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Descriptive measurements on the groups analyzed.
| Variables |
Mean |
Median |
Standard deviation |
Minimum |
Maximum |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| A | B | A | B | A | B | A | B | A | B | |
| Age | 65.3 | 65.5 | − | − | 7.4 | 6.6 | 50.0 | 51.0 | 75.0 | 76.0 |
| Preoperative Hb | 13.1 | 13.3 | 13.2 | 13.5 | 0.8 | 0.9 | 12.0 | 12.0 | 14.6 | 14.9 |
| Postoperative Hb | 9.5 | 9.1 | 9.5 | 8.1 | 1.6 | 1.1 | 7.0 | 7.0 | 12.2 | 10.6 |
| Volume drained | 749.5 | 761.0 | 705.0 | 700.0 | 205.8 | 228.8 | 500.0 | 530.0 | 1,150.0 | 1,250.0 |
