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Validity of the impact on participation and autonomy questionnaire: a comparison between two countries

Validity of the impact on participation and autonomy questionnaire: a comparison between two countries
Validity of the impact on participation and autonomy questionnaire: a comparison between two countries
Purpose. To evaluate the cross-cultural validity of the five subscales of the Impact on Participation and Autonomy (IPA) measure and the full 31-item scale.

Method. Data from two validation studies (Dutch and English) were pooled (n = 106). Participants (aged 18 – 75), known to rehabilitation services or GP practices, had conditions ranging from minor ailments to significant disability. Validity of the five subscales and the total scale was examined using Rasch analysis (Partial Credit Model). P values smaller than 0.01 were employed to allow for multiple testing.

Results. A number of items in all the subscales except ‘Outdoor Autonomy’ needed rescoring. One ‘Indoor Autonomy’ item showed uniform DIF by country and was split by country. One ‘Work and Education’ item displayed uniform and non-uniform DIF by gender. All the subscales fitted the Rasch model and were invariant across country. A 30-item IPA also fitted the Rasch model.

Conclusion. The IPA subscales and a 30-item scale are invariant across the two cultures and gender. The IPA can be used validly to assess participation and autonomy in these populations. Further analyses are required to examine whether the IPA is invariant across differing levels of disability and other disease groups not included in this study.
outcome assessment (health care), rehabilitation, chronic disease
0963-8288
1502-1509
Kersten, Paula
039a54d8-5629-47fd-ba55-5b60e7d3e7dc
Cardol, Mieke
84a60937-504f-4249-bbf5-300c96f5c32b
George, Steve
bdfc752b-f67e-4490-8dc0-99bfaeb046ca
Ward, Christopher
c5061210-240b-4388-a34f-734554224212
Sibley, Andrew
e81d311c-8b29-4fdc-85e5-b61ee3c32b06
White, Barney
ae6fe602-987b-44da-83b6-1b6d73da22c6
Kersten, Paula
039a54d8-5629-47fd-ba55-5b60e7d3e7dc
Cardol, Mieke
84a60937-504f-4249-bbf5-300c96f5c32b
George, Steve
bdfc752b-f67e-4490-8dc0-99bfaeb046ca
Ward, Christopher
c5061210-240b-4388-a34f-734554224212
Sibley, Andrew
e81d311c-8b29-4fdc-85e5-b61ee3c32b06
White, Barney
ae6fe602-987b-44da-83b6-1b6d73da22c6

Kersten, Paula, Cardol, Mieke, George, Steve, Ward, Christopher, Sibley, Andrew and White, Barney (2007) Validity of the impact on participation and autonomy questionnaire: a comparison between two countries. Disability and Rehabilitation, 29 (19), 1502-1509. (doi:10.1080/09638280601030066). (PMID:17852246)

Record type: Article

Abstract

Purpose. To evaluate the cross-cultural validity of the five subscales of the Impact on Participation and Autonomy (IPA) measure and the full 31-item scale.

Method. Data from two validation studies (Dutch and English) were pooled (n = 106). Participants (aged 18 – 75), known to rehabilitation services or GP practices, had conditions ranging from minor ailments to significant disability. Validity of the five subscales and the total scale was examined using Rasch analysis (Partial Credit Model). P values smaller than 0.01 were employed to allow for multiple testing.

Results. A number of items in all the subscales except ‘Outdoor Autonomy’ needed rescoring. One ‘Indoor Autonomy’ item showed uniform DIF by country and was split by country. One ‘Work and Education’ item displayed uniform and non-uniform DIF by gender. All the subscales fitted the Rasch model and were invariant across country. A 30-item IPA also fitted the Rasch model.

Conclusion. The IPA subscales and a 30-item scale are invariant across the two cultures and gender. The IPA can be used validly to assess participation and autonomy in these populations. Further analyses are required to examine whether the IPA is invariant across differing levels of disability and other disease groups not included in this study.

Full text not available from this repository.

More information

Published date: 15 October 2007
Keywords: outcome assessment (health care), rehabilitation, chronic disease
Organisations: Faculty of Health Sciences

Identifiers

Local EPrints ID: 64949
URI: http://eprints.soton.ac.uk/id/eprint/64949
ISSN: 0963-8288
PURE UUID: c543d569-bd59-4a1d-bee0-6d7c74c63caa

Catalogue record

Date deposited: 26 Mar 2010
Last modified: 13 Mar 2019 20:20

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