Table III.
Comparison of haemoglobin (mg/dl) change from preoperative to second postoperative day between the two groups.
| Mean Hb (SD) | Preoperative | 2nd postoperative day | p-value* |
|---|---|---|---|
| Group A (n = 86) | 13.93 (1.29) | 11.13 (1.00) | < 0.001 |
| Group B (n = 172) | 13.98 (1.13) | 11.30 (1.11) | < 0.001 |
| p-value † | 0.732 | 0.225 |
Group A = patients with BMI ≥ 40 kg/m2
Group B = patients with BMI < 30 kg/m2
*
Within group, paired-samples t-test
†
Between groups, independent-samples t-test
Group A, morbidly obese; Group B, nonobese; Hb, haemoglobin; SD, standard deviation.