The former Italian champions are currently ninth in Serie A with 34 points from 24 matches, 10 points off the final Champions League spot.
"While we are all not happy with our recent results, I have complete confidence in our players and entire staff," he told Roma's official website. "As I have said on every occasion we are building an organisation and team that will take some time and that Rome can be proud of.
"In times of transition, there will always be instances in which, in hindsight, we may have taken some different decisions but I don't intend to put band aids on in order to satisfy some in the short term.
"I am sorry that we all would like to see quick results but since becoming president seven months ago I feel we have moved in many respects in the right direction for the longer term viability and greatness that I believe we can achieve for Roma."
Roma lost 3-1 to Sampdoria away from home in Serie A on Sunday.