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Table 2 Hemoglobin, hematocrit, and reticulocyte count ration in twins in depending on chorionicity and mode of delivery

From: Hemoglobin differences in twins are related to the time of cord clamping, not intertwin transfusion – a prospective cohort study

 

Twin 1

 

Twin 2

HGB (g/dL) median (IQR)

HCT (%) median (IQR)

Reticulocyte count ratio median (IQR)

HGB (g/dL) median (IQR)

p

HCT (%) median (IQR)

p

At birth

 MC

18 (16.7–19.8)

51.5 (47.3–56.7)

0.9 (0.5–1.4)

18.2 (17.2–19.8)

0.9

52.1 (549.4–56.1)

0.8

 DC

17.5 (16.5–18.9)

50.3 (47.1–55.2)

1 (0.6–1.4)

18.3 (17.6–18.5)

0.3

52.5 (48.1–55.4)

0.3

 p

0.1

0.2

0.9

0.5

 

0.6

 

24–48 h after delivery

 MC

17.1 (15.8–19)

48.8 (45.2–53.7)

 

17.8 (16.5–19.5)

0.2

51.3 (46.5–55.4)

0.2

 DC

17 (15.6–18.7)

48.1 (44.8–53.4)

 

17.3 (15.9–19.3)

0.2

49.5 (45.3–53.7)

0.2

 p

0.3

0.6

 

0.6

 

0.5

 

At birth

 VD

18 (16.7–19.7)

52.8 (48.2–56.3)

0.9 (0.5–1.3)

17.5 (16.2–19)

0.2

49.7 (48.1–54.5)

0.2

 CS

17.8 (16.5–19.1)

50.8 (46.7–55.6)

1 (0.5–1.4)

18.4 (16.9–19.8)

0.1

52.5 (48.8–56)

0.05

 p

0.3

0.3

0.8

0.03

 

0.05

 

24–48 h after delivery

 VD

16.8 (15.9–19.2)

48 (40–54.2)

 

17.2 (15.9–17.6)

0.8

48.2 (45.5–50.9)

0.7

 CS

17.2 (15.6–18.8)

48.5 (44.9–53.4)

 

17.9 (15.9–19.5)

0.01

51.4 (46.2–55.6)

0.01

 p

0.04

0.5

 

0.04

 

0.06

 
  1. HGB hemoglobin, HCT hematocrit, IQR interquartile range, MC monochorionic, DC dichorionic, VD vaginal delivery, CS cesarean section