Table 1 Criteria and scoring for considered scales

Context:

1 = Acute care environment

0 = other

1

1

1

Assessor:

1 = non-expert

0 = expert (e.g. physician)

1

1

1

Amount of patients under assessment

2 = over 150

1 = 100–150

0 = under 100

2

2

2

Usability

2 = short, incl. filling and scoring instructions

1 = long, incl. filling and scoring instructions

0 = long or no instructions

1

2

1

Process of development based on:

2 = DSM-III/ IV and is reported

1 = other and is reported

0 = no report of development

1

Delphi panel, correlates with DSM-III-R

2

2

Correlation validity:

correlation to the DSM-criteria

2 = r >0.60

1 = 0.40 < r < 0.60

0 = r < 0.40 or not reported

1

0.70, 0.54³

2

0.71⁴

0

not reported

Concurrent validity:

Correlation to the comparison scale

2 = r > 0.60

1 = 0.40 < r < 0.60

0 = r < 0.40 or not reported

2

0.87 MMSE^1,3

2

0.67 MDAS^2,4

2

0.63 CAM⁵

0.79 MMSE^1,5

Discriminant validity:

1 = appropriately discriminates confusion

from non-confusion

0 = no discrimination or not reported

1

sensitivity 1.0⁶

specificity .87⁶

1

sensitivity .86⁴

specificity .87⁴

1

sensitivity .89⁶

specificity .88⁶

Internal Consistency: Cronbach’s α

2 = 0.70 < α < 0.90

1 = α > 0.9 or 0.60 < α < 0.70

0 = α < 0.60 or not reported

2

0.90³

0

not reported

1

0.93⁵

Interrater reliability: Cohen’s κ

2 = > 0.8

1 = 0.6 < κ < 0.8

0 = < 0.6 or not reported

1

0.65³

2

0.89⁴

0

not reported

Amount of validation to other languages

2 = 2 or over

1 = 1

0 = none or not mentioned

2

2

0

Total

13

17

11