Table 1. Means and standard deviations for each severity group as defined by the mJOA.

Severity	n	GR-sens (0–24)X (SD)	GR-str (0–100) X (SD)	GR-pp (sec) X (SD)	QuickDASH(0–100) X (SD)
Mild	59	23.16 (1.97)	98.13 (2.35)	93.96 (43.57)	18.51 (17.79)
Moderate	57	20.78 (3.62)	94.83 (5.17)	116.00 (36.06)	38.81 (22.03)
Severe	31	17.62 (5.87)	88.32 (13.12)	133.05 (57.49)	57.12 (19.93)

mJOA score of 17–15 = mild, 14–12 = moderate, less than 12 = severe [5]; GR-sens = GRASSP Sensation, GR-str = GRASSP Strength, GR-pp = GRASSP Prehension Performance.