Characteristics | Control group(n = 20) | Milked group(n = 20) | 95% CI | p Value |
Haemoglobin value at birth (g/l) {range} | 141 (16) | 165 (14) | 1.39 to 3.27 | <0.01** |
(122–169) | (137–196) | – | ||
Phlebotomy loss/birth weight (ml//kg) | 16.0 (3.0) | 16.7 (4.8) | −1.79 to 3.35 | 0.27 |
Day at EPO start | 17.9 (7.2) | 19.3 (4.9) | −2.67 to 5.40 | 0.25 |
Haemoglobin value at EPO start (g/l) | 117 (14) | 120 (2.0) | −0.72 to 1.40 | 0.26 |
No RBC transfusion, No (%) | 6 (30) | 13 (65) | 0.14 to 0.63 | 0.03* |
Number of blood transfusion ⩽3 weeks | 2.5 (3.3) | 0.7 (1.2) | −3.35 to −0.15 | 0.02* |
0–14 | 0–4 | |||
Total number of blood transfusions | 4.0 (4.2) | 1.7 (3.0) | −4.69 to −0.01 | 0.02* |
{range} | {0–14} | {0–9} | ||
Systolic blood pressure at admission (mm Hg) | 38 (10) | 45 (11) | 0.23 to 14.55 | 0.049* |
Diastolic blood pressure at admission (mm Hg) | 23 (7) | 29 (8) | 0.17 to 11.66 | 0.04* |
Mean blood pressure at admission (mm Hg) | 28 (8) | 34 (9) | 0.22 to 12.27 | 0.03* |
Maximum serum bilirubin (μmol/l) | 134 (42) | 140 (44) | −1.22 to 2.03 | 0.30 |
Duration of mechanical ventilation (days) | 36.1 (25.3) | 21.9 (19.1) | −30.31 to −0.20 | 0.04* |
Duration of O2 (days) | 46.6 (24.8) | 23.4 (18.8) | −17.37 to −0.14 | <0.01** |
Duration of O2 ⩾30% (days) | 14.4 (15.5) | 6.0 (9.4) | −38.54 to −8.00 | 0.03* |
Data are mean (SD) unless stated otherwise
*p<0.05; **p<0.01.
EPO, erythropoietin; RBC, red blood cells.