Duke University Graduate School Ph.D. Completion Rates for Students Admitted in 1998-2003
	Total # Matrics	# of Ph.D.'s	# Still Enrolled	# of Withdrawn	Estimated % Completion*
PHYSICAL SCIENCES	414	267	8	134	65%
Environment	57	36	4	16	68%
*Assumes 3/4 of those still here will obtain Ph.D.
Five-year cohort data posted: October, 2009