Fig. 1
From: Career-computer simulation increases perceived importance of learning about rare diseases
Graphs of the relationship between the CCN and calculated prevalence. The decaying exponential function shown was used to calculate prevalence values for theoretical conditions, each specified by a unique condition code numbered 1 to 462. Linear (a) and log (b) scales are shown. Condition code = 1 gave highest prevalence of 0.641; while condition code = 200 gave prevalence of 2 × 10− 3, which is a threshold below which conditions may be considered rare; condition code = 303 gave prevalence of 10− 4; condition code = 382 gave prevalence of 10− 5; and condition code = 462 gave prevalence of 10− 6