Cherry Picking?

I see a lot of couples that fail IVF at other in vitro fertilization programs and then come to us for their 3rd or 4th or 5th IVF attempt. They seek an IVF clinic that can give them a better outcome. Recently I’ve been hearing a similar story from couples that have failed at certain other IVF clinics in the Chicago area.

What to do if your first IVF cycle fails

These couples asked their fertility doctor why our clinic (Advanced Fertility Center of Chicago) has higher IVF and donor egg success rates than they have. They have been told that “Dr. Sherbahn cherry picks the best patients and does not treat patients with a low chance to get pregnant”. In other words they are accusing me of turning patients away with a low chance for pregnancy in order to cherry pick only the best patients and thereby artificially pump up our success rates.

It is a total crock. Patients that fail IVF again and again are likely to do IVF related research on the internet. They will find the CDC and SART websites where they can see if another clinic in their area has better pregnancy rates than the program where they failed.

How to research IVF success rates at US clinics

• People are often motivated enough at that point to drive farther to a clinic that might give them a better chance for success.
• Therefore, people that fail and often have egg quality problems or other issues holding back their success will tend to switch to programs with higher success rates after they have done research.
• This results in programs like ours with higher than average success rates getting more patients with previous failures - which tend to be the most difficult cases.
• As a result, we will get relatively fewer “easy” cases

We do not send patients away or tell them we will not do IVF on them unless they are menopausal or otherwise clearly have a very low chance of success. I believe that if the couple has about a 5% or better chance of success and has been educated about their chances – we should allow them to cycle here. Taking patients with a 5% chance of success is certainly not “cherry picking”

• Some fertility specialists with big egos and poor quality IVF programs either just can’t accept the fact that their IVF programs aren’t very good – or perhaps they’re in denial and really believe that other programs have better success rates because they “cherry pick”
• Either way it’s pitiful

The clinics with low success rates often say that the reason IVF success rates are different between clinics is because:

• Patient populations are different between clinics
• Criteria for canceling IVF stimulation cycles are different
• The number of embryos transferred is different
• The percentage of single embryo transfer cases performed is different

Because these things can be different between clinics they claim that comparing success rates is not valid. However, just because comparisons are not perfect does not mean that comparisons should not be made. We cannot expect 100,000 IVF patients coming to 500 clinics across America to all have equal potential for a successful pregnancy. Every case is different, every egg and every sperm is unique and even the uterus can vary to some extent.

• However no clinic gets all the good cases, and no clinic gets only bad cases
• A mix of patients will present themselves to every clinic for treatment

If we look at success rates of clinics in the US according to the CDC and SART 2008 data sets (see graph below), we see a range of live birth success rates for cycles using fresh donor eggs from 25% to 81% per transfer. The national average for 2008 was 55% per transfer.

Our donor egg success rates

(continue reading…)

Richard Sherbahn, MD is a fertility doctor practicing in the Chicago, Illinois area. Connect with me on Google+

Mail | Web | Google+ | More Posts

The Centers for Disease Control and Prevention, a US government agency, has just released a preliminary version of its 2007 Assisted Reproductive Technology (ART) Report. It expects to release the final version in December.

The Society for Assisted Reproductive Technology (SART) released its version of the report on 2007 IVF cycles several months ago. However, clinics are not required by law to report to SART. They are required to report to the CDC. Therefore, the CDC report shows success rates for more clinics than the SART report does.

The CDC report covers data from 430 fertility clinics. Over 142,000 assisted reproductive technology (or IVF) cycles were done at these “reporting clinics”.

There were (as always) some fertility clinics that broke federal law and refused to report their data. These IVF clinics are referred to as “non-reporting clinics”. If fertility doctors will go so far as to break federal law to keep their IVF outcome statistics from the public – those “non-reporting clinics” most likely have very low success rates.

Before you choose a fertility clinic for IVF – check success rates.

Links to both the CDC and the SART IVF success rate reports

See our IVF success rates

Richard Sherbahn, MD is a fertility doctor practicing in the Chicago, Illinois area. Connect with me on Google+

Mail | Web | Google+ | More Posts