Table 3 Hemoglobin, hematocrit, and reticulocyte count ratio in twins in relation to the time of cord clamping
Twin 1 | Twin 2 | |||||||
|---|---|---|---|---|---|---|---|---|
HGB (g/dL) median (IQR) | HCT (%) median (IQR) | Reticulocyte count ratio median (IQR) | HGB (g/dL) median (IQR) | P (HGB 1st twin vs 2nd twin) | HCT (%) median (IQR) | P (HCT 1st twin vs 2nd twin) | HGB difference > 8 g/dL N (%) | |
At birth | ||||||||
DCC + DCC N = 210 | 17.9 (16.9–19.4) | 52.1 (48.6–56) | 1 (0.5–1.4) | 18.4 (16.9–19.3) | 0.7 | 52.5 (49.4–55.7) | 0.6 | 1 |
DCC + ECC N = 24 | 17.3 (15.5–20.2) | 49.2 (43.6–56.3) | 0.9 (0.4–1.4) | 16.6 (14.3–19.3) | 0.1 | 47.8 (41.6–54.9) | 0.2 | 1 |
p1 | 0.6 | 0.4 | 0.9 | 0.04 | 0.04 | 1 | ||
ECC + DCC N = 50 | 17.7 (16.5–18.8) | 50.7 (47.1–54.3) | 1.1 (0.6–1.3) | 17.7 (16–19.9) | 0.7 | 52 (48.1–56.2) | 0.5 | 0 |
p2 | 0.3 | 0.4 | 0.8 | 0.5 | 0.8 | 0.9 | ||
p3 | 0.8 | 0.5 | 0.2 | 0.2 | 0.04 | 0.9 | ||
ECC + ECC N = 54 | 17 (15.7–17.8) | 48.5 (44.5–50.7) | 1 (0.6–1.4) | 17.6 (16.1–19.5) | 0.3 | 50.4 (46–55.1) | 0.3 | 1 |
p4 | < 0.001 | < 0.001 | 0.9 | 0.4 | 0.1 | 1 | ||
p5 | 0.8 | 0.7 | 1 | 0.2 | 0.3 | 1 | ||
p6 | 0.2 | 0.1 | 0.9 | 0.8 | 0.3 | 0.9 | ||
24–48 h after delivery | ||||||||
DCC + DCC | 17.4 (16.4–19) | 50.4 (46.9–53.6) | 17.9 (16.6–19.5) | 0.2 | 51.2 (47.9–55.5) | 0.1 | 1 | |
DCC + ECC | 15.9 (14.4–18.7) | 46.2 (41.8–52) | 15 (14.2–16.5) | 0.08 | 42.7 (41.3–46.9) | 0.1 | 1 | |
p1 | 0.1 | 0.1 | < 0.001 | < 0.001 | 1 | |||
ECC + DCC | 16.6 (15.8–19.9) | 47.4 (45.9–53.9) | 17.5 (16.3–19.2) | 0.3 | 48.4 (47–55.8) | 0.2 | 0 | |
p2 | 0.2 | 0.3 | 0.9 | 0.8 | 0.9 | |||
p3 | 0.3 | 0.5 | < 0.001 | < 0.001 | 0.9 | |||
ECC + ECC | 15.3 (14.4–16) | 44.7 (40.7–47) | 15.9 (15–19.3) | 0.06 | 45.2 (42.9–52.5) | 0.1 | 1 | |
p4 | < 0.001 | < 0.001 | 0.01 | 0.04 | 1 | |||
p5 | 0.3 | 0.5 | 0.2 | 0.08 | 1 | |||
p6 | < 0.01 | < 0.01 | < 0.001 | < 0.001 | 0.9 | |||