Resolution:
## Figure 2.
Information content for two typical physical-function items. The figures indicate that rewritten items (dashed lines) have improved information
content compared with their Legacy counterparts (solid lines). Item information is
a function of the area under the curve. A theta of zero represents the population
mean (x-axis). Each integer is one standard deviation above or below the mean. More-severe
illness is represented by points to the left of zero.
Bruce |