NEW YORK—Interpublic Group (IPG) PR firms, including Weber Shandwick, Golin and DeVries, grew by nearly 10% in 2014, helping to offset slower performance in the their parent CMG division during the final quarter of the year.

The CMG unit, which includes PR firms along with several other event, sports marketing and brand consultancies, was effectively flat in Q4 2014. The unit's PR firms outperformed their CMG peers during the quarter, growing by high single-digits, according to Weber Shandwick CEO Andy Polansky.

Polansky added that Weber Shandwick submitted double-digit growth, on an organic basis, for both Q4 2014 and the full year, thanks to especially strong performances in the US, Brazil and China.

He also noted that the firm grew in all but one market in Europe, "despite the headwinds in Continental Europe and ongoing macro-economic concerns."

"More and more clients are hiring us on an integrated level," added Polansky, referring to Weber Shandwick's investment in new units such as Mediaco and SawMill. "That's really been game-changing for us."

Overall IPG revenues were up 4% in Q4 2014 to $2.21bn.