Interpublic today reported a $58.5M Q1 loss, up from $45.7M a year ago, and a 2.4 percent rise in revenues to $1.5B.

Revenues in its McCann-led advertising agency network, which generated 82 percent of overall $1 revenues, dipped 0.2 percent.

CEO Michael Roth expects to hit overall 2013 financial goals due to "significant assignments coming on stream in the coming months and our proven ability to closely manage costs."

IPG's constituency management group, which includes Weber Shandwick, GolinHarris, DeVries, Cassidy, Jack Morton, Octagon and FutureBrand, sparkled during the quarter as revenues advanced 14.8 percent to $302M.

WS CEO Andy Polansky said his unit was up 5.3 percent, pacing the four percent growth of overall PR revenues.

He said WS had strong growth at its New York digital and social media hub, as well as its offices in Texas, St. Louis, Canada, Brazil and Asia.

IPG ended Q1 with $1.7B in cash/cash equivalents and $2.2B in total debt.