Omnicom first quarter 2013 PR revenues rose 3.7% to $318.4M as the marketing communications conglomerate saw overall revenues rise 2.8% to nearly $3.4B for the period over 2012.

Net income inched up 0.2% to $205.1M.

Organically, OMC's PR units – including Ketchum, Porter Novelli, Fleishman-Hillard and Clark & Weinstock, among others – posted a 1.9% increase for Q1, ahead of its customer relationship management (Siegel + Gale, Interbrand) operation, which fell 0.6% on revenue of $1.2B, and specialty communications (Adelphi, CDM Group), up 1% organically to $256M.

Advertising, however, set the pace with 5.7% growth (6.1% organic) and revenue of nearly $1.7B for the period.

The U.S. saw organic growth of 4.1% to $1.8B while operations outside of Europe and the U.K. jumped 5.2% to $7754M. Euro currency markets declined 3.7% to $529.1M and the U.K. ticked up 2.3% to $303.2M.

OMC claims total debt rose to nearly $4.5B from $3.2B in 2012, while cash and short-term investments also increased to $2.1B, from $1.5B for the year earlier period.

OMC shelled out $20M in Q1 for acquisition costs, including $13.5M for earn-outs on deals completed after 2008.