Do babies come on their due dates? This was the question on my mind during the later stages on my pregnancy in the spring of 2010. I heard a lot of conflicting information about what a "due date" meant and when babies were born. Some people…
I wanted to make this simple data table after many visitors posed this question: "We know that many women are induced for to avoid going postdate, doesn't this bias our data?" Fair question. Most of the graphs I have just throw out indu…
What babies earlier, boys or girls? I didn't ask questions about this until the survey had been running fr a while but added the question later, in case it showed anything shocking or interesting. It didn't, really, but here are the results. …
In the survey, 35 participants claim to know their exact conception date. This is rare; most due dates are measured from last menstrual period because it's easier to track. But the general question that always comes up is "Would my due…
There's a rumor that winter babies go a little later than summer babies. In the table below, the "2/3 Range" means that 2/3 of all babies born during this month were between those days. 280 days exactly 40 weeks. The page show…
Congratulations, you've hit your due date! Snap a photo! You probably know this, but the odds are you won't have your baby today. In fact very few women actually have their babies on their due dates. Your due date is special, however, because…
Right now the results for this graph are pretty flat, but the most common day for a baby to be born was Thursday. The least common day for a baby to be born was Sunday. Data table Percentages are based on the total (16899). Weekday % Spontaneous …
It was silly of me to make this graph because multiple large-scale studies have shown that there is no correlation between the phase of the moon and when babies decide to show up. But when you're a programmer with data and a word problem, som…
I read somewhere that maternal age has something to do with when labor sets in, so I included it in the survey. I found nothing terribly interesting or conclusive. This sort of validated my decision to keep the survey simple and not consider ev…
Here's the big question this graph is trying to answer: The western world likes to induce babies rather than let them go too late, doesn't this skew your results by removing late babies from the "late" end of the spectrum where the…
Birthweight (in grams) vs. Gestation time The CDC has better data on this, but pregnant women frequently wonder whether their late babies will be huge so I asked my survey participants for weight just for funzies. On average, babies born later ar…
This chart shows types of delivery on each day by percentage, based on the total births in the survey. Does induction increase my odds of having a cesarean? Spontaneous Labor Induced Labor Vaginal 11179 2814 Unscheduled Cesarean …
This graph shows the percentage of births that'd occured on or before a given day, like a running total. There's a popular rumor out there that first time moms are very likely to go past their due dates... sometimes even way past. I had …
I have another good chart that sums up the length of pregnancy when comparing all first time moms, all second time moms, and all third time moms. But this graph is looking more at the individual non-first-time moms in my survey to figure out when each…
