Well it also depends on what you make too. Self employed does not necessarily meant you can afford premiums of private insurance.
I also have not seen anywhere that anyone making less than X amount of money regardless of gender and age will qualify for free or greatly reduced health insurance (again, I might be missing something). All I have seen is that no one knows for sure what will happen.
Let me clarify, Is the health insurance only available for the very poor, or can just anyone buy it? If it's intended goal is to replace the insurance system that we have now, what are people who are not on an employer plan supposed to buy? My understanding is that it would be VERY expensive for an average middle class person that does not have an employer voucher to buy this insurance.