Mild Anemia and Pregnancy Outcome in a Swiss Collective

Table 3

Perinatal outcome (%).

(a)

	Group 1	Group 2	Group 3	Group 4	All women
Gestational age at delivery (wk)	38.6 ± 2.3	38.9 ± 1.9	38.7 ± 1.8	38.7 ± 2.6	38.7 ± 2.9 (25–42)
Birth weight (g)	3412 ± 605	3369 ± 625	3218 ± 546	3299 ± 687	3320 ± 646 (730–5250)
Meconium in amniotic fluid	3/25 (12.0)	1/123 (0.8)	3/45 (6.7)	14/189 (7.4)	21/382 (5.5)
LBW	2/25 (8.0)	7/123 (5.7)	3/45 (6.7)	19/189 (10.1)	31/382 (8.1)
IUGR	0/25 (0.0)	7/123 (5.7)	3/45 (6.7)	12/189 (6.3)	22/382 (5.8)
Macrosomia	4/25 (16.0)	14/123 (11.4)	0/45 (0.0)	15/189 (7.9)	33/382 (8.6)
Preterm delivery	2/25 (8.0)	7/123 (5.7)	2/45 (4.4)	18/189 (9.5)	29/382 (7.6)
PPROM	1/25 (4.0)	2/123 (1.6)	0/45 (0.0)	7/189 (3.7)	10/382 (2.6)
Still birth	0/25 (0.0)	0/123 (0.0)	1/45 (2.2)	0/189 (0.0)	1/382 (0.3)
Neonatal death	0/25 (0.0)	0/123 (0.0)	0/45 (0.0)	1/189 (0.5)	1/382 (0.3)
NICU admissions	0/25 (0.0)	0/123 (0.0)	0/45 (0.0)	1/189 (0.5)	1/382 (0.3)
Apgar score at 1′	8.1 ± 0.8 (6–9)	7.9 ± 0.9 (3–9)	7.9 ± 1.5 (0–10)	7.7 ± 1.3 (1–9)	7.9 ± 1.2 (0–10)
Apgar score at 5′	8.8 ± 0.7 (7–10)	9.0 ± 0.5 (7–10)	8.8 ± 1.5 (0–10)	8.9 ± 0.9 (3–10)	8.9 ± 0.9 (0–10)
Apgar score <5 at 5′	0/25 (0.0)	0/123 (0.0)	1/45 (2.2)	3/189 (1.6)	4/382 (1.0)

(b)

P value	1 versus 4	2 versus 4	3 versus 4	1, 2, and 3 versus 4
Meconium in amniotic fluid	0.428	0.006^*	1	0.12
LBW	1	0.211	0.583	0.192
IUGR	0.368	1	1	0.666
Macrosomia	0.25	0.324	0.82	0.717
Preterm delivery	1	0.287	0.38	0.179
PPROM	1	0.491	0.351	0.216
Still birth	NoS	NoS	0.192	1
Neonatal death	1	1	1	0.495
NICU admissions	1	1	1	0.495
Apgar score <5 at 5′	1	0.281	0.577	0.368

P value < 0.05.
NoS: no statistics are computed because variable is a constant.