ACTIVLIM - Presentation
site navigation- The place of activity limitations according to ICF classification
- Development of the ACTIVLIM scale using the Rasch measurement model
- Synopsis
The place of activity limitations according to ICF classification
Activity limitations, as measured by ACTIVLIM, is defined as the difficulties a patient may have in executing daily activities, whatever the strategies involved (Vandervelde et al. 2007). It refers to the Activity domain of the ICF.
See the page on the International Classification of Functioning, Disability and Health.
Development of the ACTIVLIM scale using the Rasch measurement model
The ACTIVLIM questionnaire has been calibrated in children and adults with neuromuscular disorders (Vandervelde et al. 2007) according the difficulty of patients in performing daily activities as perceived by the parents of the affected children or by the adult patients themselves.
This scale can be used for patients from 6 till 80 years of age in such a way that the evolution of the disease course can be followed from the childhood to the adulthood.
The original version of ACTIVLIM was developed in French and Dutch. However, an English version is also available (see downloads section).
The questionnaire was originally developed using the Rasch measurement model which allows to convert ordinal scores into linear measures located on a unidimensional scale.
Synopsis
ACTIVLIM in children and adults with neuromuscular disorders
- 22 daily activities (4 specific activities for children, 4 specific activities for adults and 14 common activities)
- Each item is answered on a 3-level scale (impossible, difficult, easy).
- The item difficulty increases with upper and lower limbs involvement.
- Measurement range: approx. 9 logits.
- Measurement error: 0.43 logits in the centre of the scale.
- Least measurable difference: 0.16 logit in the centre of the scale.
- Separation reliability: 0.96 in our sample of 369 NMD patients.
- Invariant item hierarchy across: gender, age, language community and type of NMD in our sample of 369 NMD patients.
- Test-retest reliability: ICC = 0.93 after a delay of 24 ± 9 days
- Construct validity: ACTIVLIM vs FIM motor score (ρ = 0.85), vs Vignos grade (ρ = -0.83), and vs Brooke grade (ρ = -0.63).