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Base rate information: Iceland's health system sees about 5000 viable pregnancies per year. This means that we'd expect about 4 births with Down syndrome per ye
by saithound 6y ago
Base rate information: Iceland's health system sees about 5000 viable pregnancies per year. This means that we'd expect about 4 births with Down syndrome per year. We see 1-2, meaning that about 2-3 pregnancies are terminated in Iceland due to Down syndrome each year.
- handedness 6y agoCorrect. Here's a somewhat larger set from Western Australia, showing Down terminations roughly tracking with diagnoses: https://1v1d1e1lmiki1lgcvx32p49h8fe-wpengine.netdna-ssl.com/wp-content/uploads/2017/08/0818-Down-syndrome-pregnancies.jpg https://1v1d1e1lmiki1lgcvx32p49h8fe-wpengine.netdna-ssl.com/... From: https://thenewdaily.com.au/news/national/2017/08/17/down-syndrome-birth-terminations/ https://thenewdaily.com.au/news/national/2017/08/17/down-syn... In the US, only 2% of expecting mothers have amniocentesis or CVS tests, but of those with confirmed positives the termination rate is 75%: https://www.kcdsg.org/files/content/termination%20rate.pdf https://www.kcdsg.org/files/content/termination%20rate.pdf
- in_cahoots 6y agoThat 2% statistic is a bit misleading. Those tests carry a non-negligible risk of miscarriage, so they are generally only prescribed if other tests show that a fetus is high-risk for one of various disorders. Furthermore, some women choose not to get the test even if they are high-risk, because they would never terminate. I’m not sure it’s possible to estimate the ‘true’ termination rate using these statistics.