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Severe Impairment Battery (SIB) - Frequently Asked Questions

Could I please have more information (instructions, scoring manual, etc) about the scale in addition to the information provided in the original paper by Saxton et al 1990?

In question 21, is stirring the spoon acceptable, as opposed to eating with it?


Could I please have more information (instructions, scoring manual, etc) about the scale in addition to the information provided in the original paper by Saxton et al 1990?

The SIB evaluates cognitive abilities at the lower end of the range. There are 40 items and it takes approximately 20 minutes to complete. It is composed of very simple one-step commands which are presented in conjunction with gestural cues. Example questions include:

‘What’s your name?’
‘Please write your name here’
‘What do you call the thing you drink coffee from?’

The SIB is divided into scorable subscales, each sampling within the range expected of the severely-impaired individual. The six major subscales are attention, orientation, language, memory, visuospatial ability and construction. There are also brief evaluations of praxis and the patient’s ability to respond appropriately when his/her name is called (orienting to name). In addition, there is an assessment of social interaction skills.

The range of possible scores is 0-100. There is no cut-off for normal as the test should only be used with patients known to be severely impaired. However, it is possible to grade the severity of impairment by rating those who score less than 63 on the SIB (corresponding to less than 4 on the MMSE) as ‘very severely impaired’.

In validation studies the SIB was administered along with the MMSE and Mattis Dementia Rating scale. A Pearson product-moment correlation coefficient of 0.76 (p<0.001) was obtained for the relationship between performance on the SIB and performance on the MMSE (n=70). For those patients who comlpeted the SIB and the Mattis DRS (n=55) a correlation of 0.88 was obtained. The correlation between the Mattis DRS and MMSE was 0.77.

It has high inter-rater and test-retest reliability.

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In question 21, is stirring the spoon acceptable, as opposed to eating with it?

Yes

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Key Information

Description

Assess severe dementia in the elderly

Author(s)

A A Swihart

Francois Boller

Judy Saxton

K L McGonigle

Publication Year

1993

Age Range

51 years to 91 years

Administration

Individual - 20 minutes

Qualification Code

CL2


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