As if there was any doubt:

We found that those who watch Fox nearly every day, compared to those who never or only watch it a little, are more likely to believe some pieces of misinformation...it has been statistically proven that you will be more misinformed if you watch Fox (News) than other networks.

My favorite discovery:

The effect was also not simply a function of partisan bias, as people who voted Democratic and watched Fox News were also more likely to have such misinformation than those who did not watch it.

Yes, even if you voted Dem you were just as likely to be adversely affected by the power of Fox News. It's like an evil, near-invincible force, just waiting to suck in its next helpless victim. Ever see the movie Videodrome?