Table 7. Distribution in Pain Classes, Average Pain Score, and Ranking of Initial Complex

The pain classes are derived by dividing the highest pain score in the original classification (i.e. , 4) by the highest pain score reported during the test of the first combination (i.e. , 2). The new classes are defined by the ranges 0–0.4, 0.4–0.8, 0.8–1.2, 1.2–1.6, and 1.6–2.0. The new pain scores of the normalized classes are chosen as the midpoints of the new classes (values in brackets).