TABLE 2.

Optimal Cutpoint Analysis using 3 Criteria (N = 2341 Rating Fatigue Severity as 1–10)

Cutpoint Pairsa	Wilks lambda	Pillai’s trace	Hotelling’s trace
2/4	80.8	72.7	89.0
3/4	79.4	71.8	87.2
3/5	94.5	83.3	105.9
3/6b	99.3	87.1	111.9
3/7b	98.7	86.7	111.0
3/8	89.0	79.4	98.8
4/5	88.6	78.7	98.7
4/6	94.8	83.6	106.2
4/7b	96.5	85.1	108.2
4/8	90.9	80.9	101.1
5/6	80.3	72.3	88.5
5/7	84.2	75.5	93.1
5/8	83.9	75.3	92.6
6/7	72.2	65.7	78.8
6/8	73.9	67.2	80.7
7/8	59.5	55.2	63.7

^aThe analyses categorize fatigue into 3 groups: mild (from 1 to lower cutpoint), moderate (from lower cutpoint +1 to upper cutpoint) and severe fatigue (from upper cutpoint +1 to 10).

^bBest model fit.