Table 2

Definition of the modified Rankin Scale

0No symptoms
1No significant disability despite symptoms; able to carry out all usual duties and activities
2Slight disability; unable to carry out all previous activities, but able to look after own affairs without assistance
3Moderate disability; requiring some help, but able to walk without assistance
4Moderate–severe disability; unable to walk without assistance and unable to attend to own bodily needs without assistance
5Severe disability; bedridden, incontinent and requiring constant nursing care and attention