Validation of the Cognitive Assessment of Later Life Status (CALLS) instrument: a computerized telephonic measure

BMC Neurology

Table 3 Descriptive Statistics of CALLS Interview

Test	Mean Score	Standard Deviation	Range
*Verbal Learning and Memory*
Word List Trial 1	4.6	1.8	0–9
Word List Trial 2	6.4	2.1	1–12
Word List Trial 3	7.4	2.0	2–12
Word List Recognition	9.2	2.0	3–12
Word List Cued Recall	6.4	2.4	0–11
Word List Delayed Recall	5.7	2.8	0–11
*Processing Speed*
Choice Reaction Time Decile	5.5	2.9	1–10
Simple Reaction Time Decile – Right ear	5.5	2.9	1–10
Simple Reaction Time Decile – Left ear	5.4	2.9	1–10
*Attention and Working Memory*
DATE Score	3.6	0.9	0–5
Digit Span Backward – span	4.4	1.3	0–6
Digit Span Forward – span	6.2	0.9	4–7
*Verbal Fluency and Naming*
President/VP Naming	3.0	1.0	0–4
F words -30 sec.	7.4	3.2	0–16
Animal Naming -30 sec.	11.5	3.4	0–23
Serial 7s	3.4	1.7	0–5
*Concept Formation*
4 Word Naming	3.9	0.4	2–4
Similarities	4.8	2.1	0–7

ISSN: 1471-2377