Table 1.

Classifying study groups based on the Glasgow Outcome Scale (GOS)

Study groups	GOS rating	Definition
Group 1	5: Good recovery	Resumption of normal life despite minor deficits
	4: Moderate disability	Disabled but independent. Can work in sheltered setting
Group 2	3: Severe disability	Conscious but disabled. Dependent for daily support
	2: Persistent vegetative	Minimal responsiveness
	1: Death	Nonsurvival