TABLE 2.

SENSITIVITY ANALYSIS OF THE INCORPORATION OF AN EXTERNAL DATA SERIES ON THE PROPORTION OF ACADEMIC OPHTHALMOLOGY ADVERTISEMENTS

TIME PERIOD	PERCENT ACADEMIC ADVERTISEMENTS
	0%	5%	10%	15%	20%	25%
Jul 90–Oct 96	837 (22.7%)	1,036 (28.1%)	1,358 (36.9%)	1975 (53.6%)	3,620 (98.3%)	2,2387 (607.7%)
Nov 96–Jan 02	2,184 (78.7%)	2,704 (97.4%)	3,548 (127.8%)	5,162 (186.0%)	9,480 (341.5%)	5,9159 (2,131.1%)
Feb 02–Feb 05	2,413 (137.8%)	2,987 (170.6%)	3,919 (223.8%)	5,700 (235.5%)	10,467 (597.8%)	65,338 (3,731.5%)