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Table 3 Mean birth outcomes by parity and maternal blood group phenotype

From: ABO blood group phenotypes influence parity specific immunity to Plasmodium falciparum malaria in Malawian women

Parity

Placental Malaria

Blood group

n

Maternal Hb g/dl

Cord Hb g/dl

Birth weight g

Length

m

Placental weight g

Ponderal index (‡)

Feto-placental weight ratio

Primiparae

Active

O group

27

11.16 (2.32)

14.50 (2.40)

2803 (460)

49.11 (3.27)

504 (94)

2.37 (0.37)

5.63(0.90)

  

non-O

16

12.25 (3.56)

15.84 (3.39)

2747 (514)

48.18 (2.81)

510 (87)

2.43 (0.28)

5.38 (0.62)

 

Past or no infection

O group

62

11.89 (3.03)

14.73 (2.64)

2811 (348)

49.03 (2.31)

498 (73)*

2.40 (0.32)

5.70 (0.76)†

  

non-O

83

11.65 (2.18)

14.78 (2.27)

2843 (424)

48.62 (3.72)

526 (84)

2.54 (0.77)

5.46 (0.79)

Multiparae

Active

O group

28

11.39 (2.02)

13.99 (3.20)

3007 (476)

48.27 (3.24)

559 (107)

2.69 (0.47)

5.57 (1.29)

  

non-O

46

11.04 (2.05)

14.11 (2.10)

2913 (540)

48.90 (3.43)

553 (113)

2.50 (0.53)

5.38 (1.16)

 

Past or no infection

O group

178

11.49 (3.00)

14.45 (2.24)

3113 (434)

49.12 (2.83)

558 (81)

2.67 (0.70)

5.63 (0.85)

  

non-O

170

11.29 (2.23)

14.08 (2.54)

3050 (395)

49.38 (3.04)

553 (81)

2.56 (0.46)

5.57 (0.65)

  1. Brackets: standard deviation
  2. Difference between blood group O and non-O *p = 0.01; †p = 0.055
  3. ‡ birthweight/length3