U.S. Federal Reserve chairwoman, Janet Yellen, says the Fed's promise to be "patient" before raising interest rates means it will hold off for 2 months to check economic conditions before taking action. This would put the decision off till June 2015. The Fed will look at a range of factors including inflation, says Yellen. Yellen's comments to the Senate Banking Committee on Feb. 24, 2015 were- "I don't want to set down any single criterion that's necessary for rate increases to occur. We will be considering a range of evidence that pertains to the inflation outlook." In testimony Yellen said she wanted to be "reasonably confident" that inflation will return to 2% before raising rates. The Fed's measure of inflation, Commerce Department's personal consumption expenditures price index is below the 2% inflation target of the Fed for 52 of the past 68 months, and for 34 consecutive months.