Table 2 Characteristics of the cord blood cells in very preterm infants

Volume collected(ml),median, range

44(8,133)

44(20,129)

41(8,133)

0.311

Volume post processing(ml),median,range

25(16,44)

25(16,30)

25(17.44)

0.239

Total cells collected (10⁸),median,range

2.76(0.22,13.20)

2.77(0.22,11.10)

2.75(0.25,13,20)

0.668

Total cells post processing (10⁸),median,range

2.6(0.21,10.93)

2.6(0.21,9.48)

2.45(0.25,10.93)

0.665

Total cells ratio (after/before),median,range

0.91(0.63,1.00)

0.91(0.80,0.99)

0.91(0.63,1.00)

0.480

Cell concentration before processing*10⁶/ml,median,range

6.13(0.65,32.57)

6.04(0.65,18.33)

6.23(0.82,32.57)

0.775

Cell concentration post processing*10⁶/ml,median,range

9.24(1.03,42.02)

10.85(1.03,32.70)

.96(1.39,42.02)

0.486

Cell number (10⁷)/kg post processing,median,range

15.79(1.52,90.29)

21.98(1.81,90.29)

13.77(1.52,88.75)

0.114

Cell number < 5 × 10⁷/kg,n,%

7(7.9)

2(5.7)

5(9.3)

0.757

Cell number 5-9.99 × 10⁷/kg,n,%

22(24.7)

8(22.9)

14(25.9)

Cell number ≥ 10 × 10⁷/kg,n,%

60(67.4)

25(71.4)

35(64.8)

Volumes/kg required for infusing 1 × 10⁷ cells/kg,median,range

1.08(0.24,9.71)

0.92(0.31,9.71)

1.12(0.24,7.19)

0.486

Infused volumes > 20ml/kg required for 1 × 10⁷ cells/kg,n,%

0%

0%

0%

1.000

Volumes/kg required for infusing 5 × 10⁷ cells/kg,median,range

5.42(1.19,48.54)

4.61(1.53,48.54)

5.58(1.19,35.97)

0.486

Infused volumes > 20ml/kg required for 5 × 10⁷ cells/kg,n,%

3(3.4)

2(5.7)

1(1.9)

0.559

Volumes/kg required for infusing 10 × 10⁷ cells/kg,median,range

10.82(2.38,97.09)

0.22(3.05,97.09)

11.16(2.38,71.94)

0.486

Infused volumes > 20ml/kg required for 10 × 10⁷ cells/kg,n,%

23(25.8)

9(25.7)

14(25.9)

1.000

Cell viability after processing(%),median, range

96.73(90.37,98.79)

96.74(90.37,98.54)

96.51(90.47,98.79)

1.000

CD34 + cells proportion after processing(%),median, range

0.57(0.09,1.87)

0.66(0.15,1.50)

0.51(0.09,1.87)

0.225

CFU-GM number/10⁵MNCs,median, range

7.33(0.21,241)

7.75(0.91,219)

6.8(0.21.241)

0.480