Table 1.

Characteristicsof the study population of 358 prospectively enrolled pregnancies with a fetal cardiac abnormality and 377 stored clinical samples, according to whether the pregnancy had 22q11.2 deletion (del)

	Prospectively enrolled pregnancies		Stored clinical samples
Characteristic	22q11.2 del (n = 34)	No 22q11.2 del (n = 324)	22q11.2 del (n = 12)	No 22q11.2 del (n = 365)
Maternal age (years)	33 ± 5 (22–43)	31 ± 6 (16–47)	29 ± 5 (18–37)	32 ± 5 (19–47)
Gestational age (weeks)	24.3 ± 6.1 (13.9–36.0)	24.7 ± 6.3 (11.4–41.0)	20.9 ± 6.6 (10.0–34.1)	17.3 ± 5.7 (10.3–37.3)
Fetal fraction (%)	16.8 ± 8.6 (6.3–36.7)	17.2 ± 7.5 (5.1–41.8)	14.8 ± 6.4 (7.5–26.1)	14.4 ± 5.8 (5.2–43.0)

Data are given as mean ± SD (range).