I am not seeking medical advice I just have a question on how the statistics work. I got NIPT testing done and i came back as a carrier for SMA. Here’s where I’m confused, the paper says before the testing the odds of the baby having it were 1 in 188-288 after the testing the odds are 1 in 2600. How does that work? It says it’s not diagnostic and the baby obviously still has a chance of having it. But how did they come up with the difference in odds?