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Table 5
Comparative analyses of clinical variables by group.
| Variable | Group | N | Mean ± SD | P-value | Effect size |
|---|---|---|---|---|---|
| CPB time | A | 15 | 111.1 ± 44.3 | 0.439⸸ | 0.167 |
| B | 16 | 95 ± 36.3 | |||
| Aortic clamping time | A | 14 | 83.6 ± 33.1 | 0.506⸸ | 0.147 |
| B | 16 | 76.9 ± 33.8 | |||
| Initial hemoglobin level | A | 15 | 10.4 ± 1.8 | 0.419* | −0.295 |
| B | 16 | 11.1 ± 3 | |||
| Final hemoglobin level | A | 15 | 10.8 ± 5.5 | 0.937⸸ | 0.021 |
| B | 16 | 9.5 ± 2 | |||
| Initial hematocrit level | A | 15 | 29.8 ± 7.8 | 0.293* | −0.385 |
| B | 16 | 33.1 ± 9.1 | |||
| Final hematocrit level | A | 15 | 28 ± 2.5 | 0.443*W | −0.278 |
| B | 16 | 29.3 ± 6.2 | |||
| Plasma free hemoglobin before CPB | A | 14 | 0.02 ± 0.01 | 0.5⸸ | 0.138 |
| B | 16 | 0.02 ± 0.02 | |||
| Plasma free hemoglobin after CPB | A | 14 | 0.08 ± 0.05 | 0.451⸸ | 0.165 |
| B | 16 | 0.07 ± 0.05 | |||
| Plasma free hemoglobin 24 h after CPB | A | 14 | 0.03 ± 0.02 | 0.201⸸ | 0.263 |
| B | 16 | 0.02 ± 0.01 |
SD: standard deviation; ES: effect size: Mann-Whitney test (effect size: r biserial point). *Student’s t-test (Cohen’s d); wWelch’s correction; ⸸Welch’s correction was applied due to violation of homogeneity of variances.
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