Length of pregnancy, type of delivery

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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 LaborInduced Labor
Vaginal 8926 2260
Unscheduled Cesarean 881 548
Scheduled Cesarean 81 242

Excluding scheduled cesareans from the table above, there were 9807 spontaneous labors and 2808 inductions. 9% of the spontaneous labors ended in cesarean and 20% of the inductions ended in cesarean.

Some people have looked at these numbers, and the fact that there seems to be an increase in cesareans after 40W0D, and wondered if there's a correlation. In other words, do "timeline-based" inductions lead to increased cesareans? That analysis gets tricky, so I'll just post the numbers and let you decide yourself what's going on.
DayTotalFollowing inductionsFollowing spontaneous labor
Vaginal
Births
Unscheduled
Cesareans
Scheduled
Cesareans
Vaginal
Births
Unscheduled
Cesareans
% Unscheduled
Cesareans
Scheduled
Cesareans
Vaginal
Births
Unscheduled
Cesareans
% Unscheduled
Cesareans
Scheduled
Cesareans
245 14 7 2 1   2   67%   2   13   5   28%    
246 16 5 0   2   100%     16   3   16%    
247 11 5 0 1   1   50%     10   4   29%    
248 21 7 2 3   3   50%   1   18   4   18%   1  
249 21 14 0 3   10   77%     18   4   18%    
250 25 5 0 4   4   50%     21   1   5%    
251 23 1 0 2     0%     21   1   5%    
252 36 15 2 9   6   40%   1   27   9   25%   1  
253 27 12 0 5   7   58%     22   5   19%    
254 39 7 1 7   2   22%     32   5   14%   1  
255 38 9 1 5   2   29%     33   7   18%   1  
256 32 4 3 4   2   33%   1   28   2   7%   2  
257 42 3 2 5   1   17%   1   37   2   5%   1  
258 53 6 2 12   2   14%   1   41   4   9%   1  
259 91 14 7 27   7   21%   5   64   7   10%   2  
260 78 11 3 22   3   12%   1   56   8   13%   2  
261 82 6 7 20   4   17%   3   62   2   3%   4  
262 82 20 3 13   5   28%   2   69   15   18%   1  
263 104 18 2 19   3   14%     85   15   15%   2  
264 86 17 7 13   3   19%   5   73   14   16%   2  
265 137 10 5 18   1   5%   5   119   9   7%    
266 176 13 8 40   5   11%   5   136   8   6%   3  
267 156 18 3 37   10   21%   2   119   8   6%   1  
268 170 15 9 35   5   13%   8   135   10   7%   1  
269 193 22 7 24   4   14%   6   169   18   10%   1  
270 245 29 5 37   4   10%   2   208   25   11%   3  
271 214 25 14 31   8   21%   11   183   17   9%   3  
272 270 28 19 45   12   21%   10   225   16   7%   9  
273 363 42 32 93   11   11%   27   270   31   10%   5  
274 325 36 30 71   15   17%   28   254   21   8%   2  
275 322 25 17 61   9   13%   11   261   16   6%   6  
276 416 37 13 65   22   25%   12   351   15   4%   1  
277 425 42 10 57   18   24%   7   368   24   6%   3  
278 414 35 9 56   10   15%   6   358   25   7%   3  
279 444 61 8 46   15   25%   5   398   46   10%   3  
280 891 97 21 118   30   20%   12   773   67   8%   9  
281 535 48 5 70   10   13%   5   465   38   8%    
282 458 57 8 72   15   17%   8   386   42   10%    
283 450 46 8 76   16   17%   5   374   30   7%   3  
284 422 56 7 78   23   23%   6   344   33   9%   1  
285 416 56 0 68   16   19%     348   40   10%    
286 446 60 5 84   23   21%   5   362   37   9%    
287 480 65 6 127   27   18%   6   353   38   10%    
288 370 58 7 102   25   20%   7   268   33   11%    
289 311 34 8 95   16   14%   7   216   18   8%   1  
290 307 51 3 98   30   23%   2   209   21   9%   1  
291 228 36 3 82   17   17%   3   146   19   12%    
292 179 34 0 77   12   13%     102   22   18%    
293 160 21 2 62   10   14%   2   98   11   10%    
294 128 36 2 62   25   29%   2   66   11   14%    
295 83 14 2 51   13   20%   2   32   1   3%    
296 48 10 1 22   7   24%   1   26   3   10%    
297 29 13 0 9   8   47%     20   5   20%    
298 16 4 0 6   1   14%     10   3   23%    
299 14 3 1 3   3   50%   1   11     0%    
300 12 2 0 3   1   25%     9   1   10%    

Due Date Survey Data

Due date statistics: A study on the length of pregnancy
Probability of delivery resulting from spontaneous labor after 35 weeks
Probability of delivery within x days of a given date
Length of pregnancy by week
Spontaneous labor and due date determination
Length of pregnancy, comparing subsequent births for individual moms
Length of pregnancy for first time vs. second & third time moms
Length of pregnancy, type of delivery
Gestation vs. Birthweight
Probablity of Induction after a given day
Average day of spontaneous labor vs. age of mother at time of birth
Are more babies born during a full moon?
What's the most common day of the week for babies to be born?
I'm still pregnant at 40W. What's it mean?
Do winter babies arrive later?
What if I know my conception date?
Are boys or girls born later?
Subsequent pregnancy date search
How do inductions bias the due date statistics?
Download the data
Birth Stories
Survey input dates

More Resources

Pregnancy Day-by-Day
Fast pregnancy calendar
Baby age calendar
EDD Icon Generator
Jo's Birth Story
Weeks vs. Months Explained
Charts generated by flot
spacefem.com
spacefem@spacefem.com

Recent Comments

For more support, encouragement, Q&A,
you are invited to join our pregnancy forum. We are dedicated to answering complicated questions as logically as we possibly can.

Clock-Ticking

Sat Aug 19 2:18 AM by lovernotafighter in Pregnancy & Parenting

Thank you everyone. :) Any info about egg-freezing is appreciated. Although, my wife can always donate hers too. Good luck, Sonic. :) Many prayers for you both! :)(sufiMYSTIC) *I'm back to my original profile, lovernotafighter.*


bad reasons for having a baby

Tue Aug 1 1:47 AM by rowan in Pregnancy & Parenting

but I take them to restaurants so I know they end up hating 90% of the things they ask for.
:lol:



- kid would like a sibling

- maybe people are right about end of life stuff



That's about it. I hated being pregnant, the last time I was pregnant the hormones were... really awful. Plus kid is now pretty big so another one would be weird and we gave away all our stuff. ;)


how do you travel?

Mon Jun 19 11:00 AM by DarkOne in Pregnancy & Parenting

We're traveling with a 2 yo and a 4yo this week. A 2 hr flight connecting to a 4 hr flight. I broke down and got tablets and headphones, now I just need to load them with movies/games. I'm packing treats and stickers and crayons and notepads. I'm almost positive I'll be carrying on a (very compactable) pillow, 'cause they don't give those out anymore on board. I'm banning toys that can roll several aisles fwd or back when inevitably dropped (besides the crayons). I was planning on gum for ascent/descent, but I think the suckers for the 2yo will be better. I'm so not looking forward to these flights. Maybe the kids will surprise me and be awesome. I'm not worried about the 4yo. But the 2yo...


Bilingual Toddler

Wed May 3 10:19 PM by Nachos in Pregnancy & Parenting

Bilingualism! This is something I know a lot about! My last job was to speak English to my class in a partial immersion school and the kids picked up English so fast but spoke back to me in German. We worked on saying different words in German and in English and it meaning the same thing and I read English books to them. They differentiated pretty well but most of them came from a mono-lingual family background.



I can still highly recommend this book: (https://www.amazon.com/Third-Culture-Kids-Growing-Revised/dp/1857885252) for bilingual children. Some very good advice in there.



Also, keep speaking English! Toddlers forget fast when a language is no longer present.



Yay bilingualism!


New parent help/suggestions

Sat Jan 14 10:07 PM by antfancier in Pregnancy & Parenting

I agree with everything lyra211 said and will add a few more.



Things you don't need:

Anything soft, fluffy or furry. My baby couldn't care less about minky blankets and soft toys. Plus they seem more gross to clean when they get covered in bodily fluids.

Clothes that look like adult clothes. It's so difficult to squeeze baby thighs into miniature corduroys or denim jeans which have no give to the fabric.

Baby washcloths. Babies make a disproportionate amount of mess so you need adult size washcloths to clean them up.



Things that were super useful:

A folding changing mat. I have a SkipHop one which has enough storage for wipes and diapers, which was all I needed to carry with me when I had a newborn. Now that he's bigger, I appreciate the larger size of the mat because the one that came with my diaper bag is way too small.

Balls. They were the first thing he played with and still his favourite toys. At the beginning he liked one made by Oball which was easy to pick up, and a soft fabric one which made a crinkly noise. Now he loves throwing a soft rubber ball and watching it bounce.


Postpartum issues: things that can go wrong after

Wed Aug 9 5:24 PM by rowan in Pregnancy & Parenting

ugh that totes doesn't just happen during c-section. I had a friend who found out when she was having (other) surgery years later and they stitched her up since "they were in there anyway". Honestly I think I also have it but it doesn't cause problems *most* of the time (sometimes stabby pain but no one takes it seriously so idk).


Just Can't Let It Go

Wed Jul 26 1:18 AM by Taurwen in Pregnancy & Parenting

We didn't find out specifically because we didn't want a lot of pink stuff if it was a girl.



Somehow MIL has still given us a ton of pink clothing that she'll change him into everytime she comes over.

I hate pink.


Another baby stars

Thu Jun 15 6:54 AM by StarsInUrEye in Pregnancy & Parenting

Thanks for the congratulations and encouragement.



I had an appointment with the obgyn today. He seems to think I'm even farther along than he originally thought. I didn't have an ultrasound. He just went by the size of my uterus. It's well over my belly button now. He's sending me to a high risk Dr. Asap and then I'm suppost to see him again on the 29th. By then he said they will have a better idea as to how far along I actually am. So far the pregnancy is going well. I did have complications with my first one and went to a specialist but this time I'm being referred to one because I'm old lol. They automatically send women when they are 35 and older.


What did I just say?

Wed Mar 15 12:25 PM by mariareese in Pregnancy & Parenting

Looking to know about the system and biology :D hehe ..


Activities for 1-3 yo's

Sat Jan 14 7:07 PM by antfancier in Pregnancy & Parenting

I find theimaginationtree.com has lots of inspiring ideas. Some look like they take quite a bit of prep, but if you're doing it for a whole class then it might be worth it. You can sort activities by age as well so it's easier to search.


How to deal with opinionated toddlers (or babies or kids)

Tue Aug 1 1:57 AM by rowan in Pregnancy & Parenting

Ooof. My kid is very social, needs to be around someone all the time. It's ... challenging, as you've found. It does get better as they gain their own interests. But it took a long time to get past clingy.



Not having read your post, but just the heading, my response was "wine." But after reading your post, I thought "wine."

Yes. After bedtime.



Also, honestly the only way we made it through was we would take turns being the center of focus. We still do this, divide and conquer (and she's only one kid, hell). Also, I know people are like really limit screen time BUT if you really need to get something done one episode of e.g. Daniel Tiger or Paw Patrol or whatever isn't gonna be too bad. I think DarkOne has some good ideas too.



Good luck.


Happiest Baby on the Block

Wed Jul 12 4:52 PM by antfancier in Pregnancy & Parenting

My mum gave me 'Your Baby and Child' by Penelope Leach, which is what she used when she had me. It covers from birth to five years. I read the first section about newborns in preparation. After having the baby, I realised I have zero time or brain power to do anything so I never got around to the rest of it. In general, I liked the book though. It's a simple overview and has nice color photos.


To all Moms: Where do you go for financial concerns?

Tue May 9 4:18 PM by rowan in Pregnancy & Parenting

My father in law does financial advising so we kind of have an in-house advisor? But seriously someone with expertise is great. There are various "how to do finances" through our local community ed, which I'd probably consider if I didn't already have someone to ask. Maybe something like that near you? Libraries also sometimes have programs.



Also I know you can do wills and stuff on your own but honestly I found it super useful to talk through it with a lawyer who does that. She thought of things we never would have. (hm really should revisit now that kid is older) It was a one time fee and not that bad.



We do most of our banking through a credit union. Have been happy with them. We refinanced our mortgage through them when we did that. I remember the big credit union bust ages ago, but there are lots more protections in place now and big banks can be pretty awful.


stuffed animals

Thu Feb 23 1:20 AM by antfancier in Pregnancy & Parenting

My brother's favorite stuffed animal was a thing we called 'gerbil'. I actually don't know what it was because we found it in the street (not sure what my mum was thinking in allowing him to pick it up, let alone keep it) and it had already lost an eye and was unidentifiable, but he became really attached to it. We almost missed a flight once because he dropped it in the airport and we had to go back to look for it.



Today for the first time my 11month old showed interest in a stuffed animal. Just before Christmas we received a box from Amazon with a giant bear inside. No gift wrap, no note. Just a bear the size of my child. It's been sat in his room and ignored completely, despite him exploring literally everything else that is in there. Then, out of the blue, he made a beeline for it and tried to pull its eyes out.


tactile stuff

Wed Jan 4 6:14 AM by Neko in Pregnancy & Parenting

All the pliable/crafty stuff I can think of has been mentioned. ETA: I lied. Bread dough!



But if generally tactile surfaces also apply, mermaid sequin pillows are comforting. It was one of my impulse buys at a department store about a month ago. I couldn't stop petting the display. The sequined side seemed like it wouldn't be comfortable to rest on but it hasn't been an issue. My stepdad really likes them so I got him one for giftmas and he said it helps distract him when chronic pain keeps him awake at night. https://www.etsy.com/listing/470423508/dragon-mermaid-reversible-luxury-sequin?ref=shop_home_active_40



I haven't field tested them on my nieces and nephews yet. That could be fun.