I hope that in the year+ since you have asked this question you have found a few answers. However, your question is very generalized and I would think the lack of answers reflects the numerous factors that can contribute to the differences you have seen in the number of jaundice cases between normal and cesarean births.
I don't have specific answers for you but I do have a few questions.
1. What is the gestation age of cesarean births compared to normal births? How does this relate to jaundice cases?
2. Do cesarean births have greater severity of jaundice on average? What levels of bilirubin were observed? How many suffered negative outcomes?
3. In how many cases of jaundice has the mechanism been determined? (genetic basis, RBC enzyme deficiency, Hemoglobinapathy, or idiopathic)?
Incidence of hyperbilirubinemia varies in different countries. To understand how these factors are represented in your area would take quite a bit of background research through the records of your hospital(s).
In my area we are currently engaged in trying to determine cause for extreme and hazardous hyperbilirubnemia, as well as implementing protocols to control jaundice following birth to prevent negative outcomes. A recent paper explored the effectiveness of those efforts. (http://dx.doi.org/10.1016/j.bcmd.2012.10.004)
I wish you luck in your pursuit of the answers to this question.
Are you sure from it? There was a 6-year research in Iran about this. The result of this research showed that there isn't significant relation between the kind of delivery (cesarean and vaginal delivery ) and icter in neonates....