"Normal" human pregnancies last 40 weeks, right? Well, no; they can vary quite a bit by the mother's race, age, number of previous children, family history of delivering early or late, home state, work habits, and even the fetus' HLA type. So where does that "40 week" thing come from? Oh, dear. So check out this super-nerdy pregnancy statistics website, from an engineer mom who is collecting data from the public (see the raw data and auto-generated graphs, and read the FAQ about the survey, with more cool graphs). Looking for day-by-day probabilities on when that baby's due? This would be your stats table with daily prediction (adjust dates at top of page as needed). Of course, you could always shut up your constantly inquiring relatives and friends another way.
posted by Asparagirl on Dec 16, 2010 - 45 comments

Fetuses may be able to feel pain as early as 20 weeks gestation. "Members of the Medical Research Council's (MRC) expert group on fetal pain, led by Professor Eve Johnstone of Edinburgh University, say the finding could have important implications for the treatment of thousands of very premature infants born every year." It frankly makes my pro-choice conscience squirm a little, too.
posted by RylandDotNet on Aug 30, 2001 - 42 comments