Table 4.

Characteristics of fetuses with parvovirus B19 infection transfused < 20 + 0 and ≥ 20 + 0 weeks of gestation

Characteristics	< 20 + 0 weeks	≥ 20 + 0 weeks	p value
Hydrops (%, n)	38.6% (22)	47.8% (22)	0.42
Mean hemoglobin before 1st IUT, g/dl	5.0 (0.3–10.7)	4.94 (1.1–12.1)	0.66
Survivor (%, n)	80.7% (46)	89.1% (41)	0.28
Non-survivor (%, n)	19.3% (11)	10.9% (5)	0.28
Number of IUTs (%, n)			0.39
1	50.9% (29)	36.9% (17)
2	29.8% (17)	47.8% (22)
3	12.3% (7)	10.9% (5)
4	7% (4)	2.2% (1)
5	0	0
6	0	2.2% (1)

p value < 0.05 is considered significant