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Graphical representation of scores estimated/predicted by using three different equations [(Y axis) versus actual ORS (X axis)]. Intercepts are drawn at ORS 18 and 30. Equation 1 represents reported Nottingham grade with no other histologic variables; Equation 2 represents current Nottingham grade with no other histologic variables; Equation 3 includes current Nottingham grade with other histologic variables; Note increasing r values.
