An unusual and much-heralded program that gave poor families cash to encourage good behavior and self-sufficiency has so far had only modest effects on their lives and economic situation, according to an analysis the Bloomberg administration released on Tuesday.

The three-year-old pilot project, the first of its kind in the country, gave parents payments for things like going to the dentist ($100) or holding down a full-time job ($150 per month). Children were rewarded for attending school regularly ($25 to $50 per month) or passing a high school Regents exam ($600).

When the mayor announced the program, he said it would begin with private money and, if it worked, could be transformed into an ambitious permanent government program.

But city officials said Tuesday that there were no specific plans at this time to go forward with a publicly financed version of the program. In an announcement at BronxWorks, a nonprofit social services agency, Mayor Michael R. Bloomberg pointed to a few examples of success: High school students who met basic proficiency standards before high school tended to increase their attendance, receive more class credits and perform better on standardized tests; more families went to the dentist for regular checkups.