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Sonographer said 90% chance girl
But ob said that's not a real good chance??


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14 replies to this topic

#1 glittery

Posted 21 February 2011 - 10:25 AM

I had my ultrasound 20 week a weekago and saw the obs today about for my checkup.  He said that 90% isn't good odds and that he only believes them when they are 99% sure. I'm confused now. I thought 90% was pretty good odds.

What do you think.

Edited by glittery, 21 February 2011 - 11:00 AM.


#2 TK421

Posted 21 February 2011 - 10:27 AM

Our sonographer said that legally they could only say 70% certainty, but realistically it's more like 95%... I think 90% is very good odds, but I think he's just covering his own a*se.

#3 ~squiggle~

Posted 21 February 2011 - 10:30 AM

We got told they were 80% sure. I think a lot of the time they are just estimating low to cover themselves IYKWIM. You'll find out soon enough!

#4 yoshimoto83

Posted 21 February 2011 - 10:32 AM

I think it's pretty sure odds. 90% chance of a girl is what we got told when I was PG with DD.
I took it to mean they are fairly sure, but with a small chance they could be wrong. I'm risk averse, so I bought some unisex clothes and some pink clothes, but only in newborn size and didn't spend too much.

#5 bailee

Posted 21 February 2011 - 10:34 AM

All I can say is how can you determine whether your are 90% right or 99% right? Do they have a tick box system that says if you see this then you are 90% likely to be correct and if you see this you will be 99% correct.  Its all an educated guess and obviously the sonographer was pretty confident with what they saw.

#6 Guest_ladidadida_*

Posted 21 February 2011 - 10:52 AM

The sonographer here (there is only one) will only ever say about 90% as he said he does not like to ever say he is absolutely certain just in case he is wrong.

So if I get a 90% from him I am fairly confident he is right. I don't think I know anyone that has been told wrong. If he is uncertain he will say so. Although, I will find out in the next few weeks if he was right with this one.

#7 misschris

Posted 21 February 2011 - 12:38 PM

I've never actually gotten a percentage like that in my scans... My sonographer just said 'and there's your girl' and pointed out the typical 'three lines' that you see in girls.

When I asked if she was sure, she said 'Yep, girl'.  That was good enough for me... and my OB had no opinion on it at all, didn't even ask what the sex was.

#8 glittery

Posted 21 February 2011 - 01:36 PM

Thanks girls. I think cause she couldnt get a great picture to show us that's why she said 90%

#9 mjlover

Posted 21 February 2011 - 03:48 PM

My OB said (at 17 weeks) he thought it was 95% a girl and when we had our 20 weeks scan it was confirmed ...

#10 White-Lily

Posted 21 February 2011 - 05:46 PM

We were told 70% chance of girl at our 20 week scan. I did see the three lines (and pointed them out), but they only ever say 70% with girls at the place i had my scan done.

We were also told they suspected it was a girl at our 12 week scan. We had it checked 2 more times further on in the pg by the OB.

She was in fact a girl original.gif

#11 Pup-pup

Posted 21 February 2011 - 07:51 PM

I'd buy pink and paint the room if I was told that.  I asked about the sex at my 13 wk scan and was told it's the clinic policy not to guess at this stage.  I was happy without that answer too, it's pointless knowing if they aren't confident and so much more reliable at 20wks.  Last preg I was told girl at 20wks, I said how sure are you, and they repeated it's a girl.  I had a girl.

#12 Shellby

Posted 22 February 2011 - 10:31 AM

Its hard I guess as I was told 90% girl, only to have a week later be told 60% chance a boy, then 32wks 90% chance a boy then 35 weeks went to 95% a girl - only to have a boy pop out.

My friend had the same thing - 99% a girl, out popped a boy.

I guess how many people go back to the original scanner and say - you were wrong, otherwise they think their guess is close. What I mean is if noone said anything to their 90% guesses, they will start to think yep those ones I think are 90% might actually be 95%, so I will say that and move up my other guesses, so a 85% might now become a 90% to them - but the whole time they have been wrong but noone has told them that.

I have found since moving in this town they seem to get it 50/50 of the time - meaning I have meet 50% of people who ended up with what they were told, and 50% who ended up having to paint those walls a different colour after getting home.


#13 Chelbean

Posted 22 February 2011 - 11:10 AM

I don't really think the percentage matters...as a PP stated...do they have tick a box requirements for each percentage?

With this pregnancy our sonographer was fantastic. He said at first he was fair certain it was a girl. When I asked him how certain he pointed out the three lines on the scan. He said that some sonographers will say its a girl because they cannot see a penis...however the penis could be hiding! A more accurate result is obtained if they can actually clearly see the little girl bits - which he could and he could show us.

Id be more wary if they couldn't point out the bits to me and just said girl because id be wondering if they just said that because at the time they couldnt see the penis IYKWIM?

#14 tygrays

Posted 22 February 2011 - 11:38 AM

I was told with 3 (it could have been 4, not good with memory at the moment, but DEFINITELY at least 3) scans that my 3rd pregnancy was 99% a girl...  we went mad with girly stuff, but put a boy layby on 'just in case'  

I have to say that that boy layby was the right thing to do... Dh was returning all the pink stuff the day after our beautiful bouncing boy was born wink.gif  Yeps, they got it VERY wrong - there is NOTHING feminine about our Wil at all ROFL  

I'd recommend if you're not going to get confirmation via a 3d scan etc to be prepared as they could be wrong - regardless what sex baby is when born though they have a way to melt your heart though any gender disappointment... nothing beats that first time they look into your eyes and you really 'meet' them original.gif

#15 Mumsyto2

Posted 22 February 2011 - 11:49 AM

I was told definitely a boy with DS and definitely a girl with DD based on routine 20wk u/s.  I asked how often they get it wrong and they said they never ever tell the parents the sex if they are not 100% positive. Also if they are not 100% positive at the 20 week u/s and you want to know you get to go back and have it done (at no extra cost) until they are 100% positive even if it involves 3D/4D solely for that reason.




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