1 EXHIBIT 11 ClinTrials Research Inc. Computation of Earnings per Common and Common Equivalent Share (in thousands, except for earnings per share) Three Months Ended ------------------ September 30, ------------- 1995 1996 ------- ------- Net income $ 979 $ 2,028 ======= ======= Average shares outstanding 8,809 10,885 Net effect of dilutive stock options - based on treasury stock method using average market price 315 324 ------- ------- Weighted average shares 9,124 11,209 ======= ======= Earnings per common and common equivalent share $ 0.11 $ 0.18 ======= ======= 2 ClinTrials Research Inc. Computation of Earnings per Common and Common Equivalent Share (in thousands, except for earnings per share) Nine Months Ended September 30, 1995 1996 ------- ------- Net income $ 2,517 $ 4,417 ======= ======= Average shares outstanding 8,788 10,129 Net effect of dilutive stock options - based on treasury stock method using average market price 279 338 ------- ------- Weighted average shares 9,067 10,467 ======= ======= Earnings per common and common equivalent share $ 0.28 $ 0.42 ======= =======