** Shares of contract research organization Medpace MEDP.O fall 9.4% to $261.76 in extended trading
** Co's Q1 new business awards fall 18.8% to $500 mln, with a 0.90x book-to-bill ratio, number of orders received to those fulfilled
** Co's Q1 backlog decreases 2.1% to $2.85 bln
** However, co reports Q1 sales and EPS above analysts' estimates - LSEG
** Co posts Q1 sales of $558.6 mln, above est. of $527.2 mln
** Co reports Q1 earnings of $3.67/shr vs. est. of $3.06/shr
** As of last close, stock down ~13% YTD
(Reporting by Kamal Choudhury in Bengaluru)
((Kamal.Choudhury@thomsonreuters.com;))