SCOTTSDALE Ariz. P.F. Chang’s China Bistro Inc. said Wednesday its first-quarter net income slipped 7.8 percent from a year ago as higher costs offset increased revenue at both its 177-unit namesake chain and its 155-unit Pei Wei Asian Diner fast-casual brand. The company also reported that the pending sale of its lone Taneko Japanese Tavern had fallen through, but did not divulge the reason.
P.F. Chang’s said in January that it had reached an agreement to sell a m