TABLE 1.

Crude prevalence of Turner syndrome by surveillance program and pregnancy outcome.

Program	Cases		Female live births	Prevalence per 10,000 live births
	All cases	Live births and stillbirths only		Totala	Live births and stillbirths only
Massachusetts	256	37	245,466	10.4 (9.2–11.8)	1.5 (1.1–2.1)
Utah	316	178	459,106	6.9 (6.2–7.7)	3.9 (3.3–4.5)
California	181	78	400,099	4.5 (3.9–5.2)	1.9 (1.6–2.4)
MACDPb	138	90	410,259	3.4 (2.8–4.0)	2.2 (1.8–2.7)
Arkansas	65	53	320,780	2.0 (1.6–2.6)	1.7 (1.3–2.2)
Texas	856	697	3,477,737	2.5 (2.3–2.6)	2.0 (1.8–2.1)
South Carolina	60	12	597,662	1.0 (0.8–1.3)	0.2 (0.1–0.4)
Total	1872	1145	5,911,109	3.2 (3.0–3.3)	1.9 (1.8–2.1)

^aLive births, stillbirths (fetal death ≥20 weeks gestation), and other pregnancy losses (elective termination at any gestational age and miscarriage <20 weeks gestation).

^bMetropolitan Atlanta Congenital Defects Program.