Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Twin pregnancies by BWS diagnosis and ART status
| BWS result and ART status | Twin pregnancies (percentage)a |
|---|---|
| BWS positive (n = 40) | 7 (17.5%) |
| • Conceived with ART (n = 16) | 5 (31.3%) |
| • Conceived without ART (n = 24) | 2 (8.3%) |
| BWS negative (n = 261) | 6 (2.3%) |
| Total (n = 301) | 13 (4.3%) |
ART assisted reproductive technology, BWS Beckwith-Wiedemann syndrome
aThe twinning rate in the USA in 2015 was 33.5 per 1000 deliveries corresponding to 3.35% (Martin et al. 2018)
