Table 1.

Comparison of Dependence Stage, CDR Scores and Terminology, and FAST Scores

Dependence Stage	DS scores (summated)	Description of Dependence	CDR means†	CDR Terminology	FAST Score‡
No Dependence	0	No dependence		0 = No Dementia	1 & 2
Very Mild	1–3	Infrequent reminders and/or minor assistance with a few IADL	0.8	0.5 = Questionable Dementia	3
Mild	4–5	Needs frequent reminders and/or assistance with more IADL	1.0	1.0 = Mild Dementia	4
Mild to Moderate	6–7	Needs household chores done for them and/or needs supervision	1.5		5
Moderate	8–9	Needs to be escorted when outside and/or accompanied when bathing or eating	2.0	2.0 = Moderate Dementia	5 & 6
Severe	10–12	Needs significant help with some or all BADL (e.g. Needs to be dressed, washed, groomed, taken to toilet)	2.8	3.0 = Severe Dementia	6 & 7
Very Severe	13–15	Needs significant help with all BADL, and needs to be moved and transferred, incontinent, needs to be fed or tube fed	3.7	4.0 = Profound Dementia	7

^†CDR means obtained in this study for each dependence stage.

^‡FAST score was estimated post hoc based upon descriptions of functional limitations at each FAST score and descriptions of dependence scale item scores that would most commonly be represented at each dependence stage.

Abbreviations: DS, Dependence Scale; CDR, Clinical Dementia Rating; FAST, Functional Assessment Staging; IADL, Instrumental Activities of Daily Living; BADL, Basic Activities of Daily Living.