You are joking, right? Is this like one of those bad logic/ find the fallacy test questions that they stick on the LSAT?
Pediatricians are in very high demand around the world. The number of people in the physician profession is 600,000. Eighty percent are male and twenty percent are female. Therefore, there is a high demand for women in this field.
Reread it, because that statement in and of itself makes no sense.
While I have no idea where you lifted that quote from or what, those numbers are way off. In fact, as of 2001 the second-highest percentage of women residents in any specialty was to be found in peds (13.5% of all women residents in 2001 were in peds, and women make up 60-70% of the current peds residency pools -- data from the ABP site).
I got the data below from a report on the AAP website--sorry the tables get all wiggy when you paste them in here, so I'll try to link to it
http://www.aap.org/womenpeds/
Then, click on the Demographic fact sheet link
Anyway, this shows that of a total 813,770 physicians in the US, 63,921 were pediatricians, and of those 48% were women.
Also, if you look at the age and gender breakdowns the trend is patently obvious...