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The purpose of the analysis is to answer the following question: will Obamacare (healthcare.gov) attract enough young, not poor and healthy to pay for the poor and sick.
According to Alexa, visitors are dominated by females, with some college education, and very few visit the website from school. However, it does not mean that those who sign up have similar demographics. You can get a breakdown per age and income if you purchase Alexa's professional plan. The cost is $149/month to track detailed stats (for Healthcare.com only), though you can cancel at any time.
The detailed demographics, typically available for any large website on Quantcast.com, were hidden at the request of the website owner.
So, can we conclude, from these high-level numbers, that Obamacare attracts too many of the poor / unhealthy and too few of the young and healthy / not poor?
It's hard to tell. A few comments:
Other interesting stats from Alexa, regarding Healthcare.gov:
Finally, it would be interesting to look at the statistics of the state websites. The California website (coveredca.com) has different demographics: still mostly female, but more with either higher or no education, and accessing the website from work rather than home. The MA website (mahealthconnector.org) is similar to the CA one, in terms of demographics. Also state websites get almost no traffic (< 3% vs. 11% for the federal website) from outside US.