Total revenue increased 16.4% in first-quarter 2013 compared with first-quarter 2012. Excluding the impact of recent acquisitions, revenue grew 6.8% for first-quarter 2013. Revenue growth in the first quarter was driven by a 24.4% increase in Decision Analytics revenue, with additional contribution from the 5.3% growth in Risk Assessment revenue.
EBITDA increased 12.6% to $179.7 million for first-quarter 2013, with an EBITDA margin of 44.6%. Net income was $80.5 million for first-quarter 2013 and adjusted net income was $91.2 million, an increase of 7.9% and 14.3%, respectively, versus the comparable period in 2012.
Excluding the effect of recent acquisitions (MediConnect, Argus, and Aspect Loss Prevention), revenue grew 6.8% in the first quarter of 2013. Overall revenue growth was the result of continued double-digit growth in Decision Analytics and single-digit growth in Risk Assessment. For first-quarter 2013, Decision Analytics revenue represented approximately 62% of total revenue.