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Qual Life Res. 2010 Sep;19(7):1079-85. doi: 10.1007/s11136-010-9661-1. Epub 2010 May 1.

The internal consistency and construct validity of the partners in health scale: validation of a patient rated chronic condition self-management measure.

Author information

1
Centre for Regional Engagement, University of South Australia, Adelaide, Whyalla, SA, Australia. john.petkov@unisa.edu.au

Abstract

PURPOSE:

The purpose of this study was to test the internal consistency and construct validity of the revised 12-item self-rated Partners in Health (PIH) scale used to assess patients' chronic condition self-management knowledge and behaviours.

METHODS:

Baseline PIH data were collected for a total of 294 patients with a range of co-morbid chronic conditions including diabetes, cardiovascular disease and arthritis. Scale data for the initial sample of 176 patients were analysed for internal consistency and construct validity using Reliability Analysis and Factor Analysis. Construct validity was tested in a separate sample of 118 patients using confirmatory factor analysis and a structural equation model.

RESULTS:

Good internal consistency was indicated with a Cronbach's alpha coefficient of 0.82 in the initial sample. Factor analysis for this sample revealed four key factors (knowledge, coping, management of condition and adherence to treatment) across the twelve items of the scale. These four key factors were then confirmed by applying the exploratory structural equation model to the separate sample.

CONCLUSION:

The PIH scale exhibits construct validity and internal consistency. It therefore is both a generic self-rated clinical tool for assessing self-management in a range of chronic conditions as well as an outcome measure to compare populations and change in patient self-management knowledge and behaviour over time. The four domains of self-management provide a valid measure of patient competency in relation to the self-management of their chronic condition(s).

PMID:
20437206
DOI:
10.1007/s11136-010-9661-1
[Indexed for MEDLINE]

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