I found more info on this method here as well: http://chronicle.uchicago.edu/961107/pregnancy.shtml(From January 2012 DDC "Informal Study" sticky thread)
To calculate using the Mittendorf-Williams method take the first day of your last period and subtract three months. Then you add fifteen days if this is your first baby and you are Caucasian. If you are not Caucasian or this is not your first baby, you will want to add on ten days.
I think this would move me from Dec 11 to Dec 16. I was guessing the 18th, so we'll see!Originally Posted by BennyPai
I've just re-calculated my EDD based on the more recent Mittendorf-Williams method. It is said to be twice as accurate, and I have always had my babies more than a week past the EDD based on the standard method.
So: my new EDD is 12/26. Time will tell which method is more accurate for me...
If anyone else is interested, here is how to use the Mittendorf-Williams method: (Copied & Pasted from Jan 2012 DDC "Informal Study" sticky thread)
I found more info on this method here as well: http://chronicle.uchicago.edu/961107/pregnancy.shtml