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01-08-2014 | Uitgave 6/2014

Quality of Life Research 6/2014

Development and psychometric properties of the Maastricht Personal Autonomy Questionnaire (MPAQ) in older adults with a chronic physical illness

Tijdschrift:
Quality of Life Research > Uitgave 6/2014
Auteurs:
Godelief M. J. Mars, Jacques Th. M. van Eijk, Marcel W. M. Post, Ireen M. Proot, Ilse Mesters, Gertrudis I. J. M. Kempen

Abstract

Purpose

To develop and test the Maastricht Personal Autonomy Questionnaire (MPAQ), an instrument measuring personal autonomy of older adults with a chronic physical illness in accordance with their experience of autonomy. Achievement of personal autonomy is conceptualized as correspondence between the way people’s lives are actually arranged and the way people want to arrange their lives.

Methods

A field test was conducted in three waves (n = 412, n = 125 and n = 244) among a random sample of people older than 59 years with either chronic obstructive pulmonary disease or diabetes mellitus. Construct validity, reproducibility and responsiveness were evaluated.

Results

The MPAQ entailing 16 items consists of three scales: degree of (personal) autonomy, working on autonomy and dilemmas. Construct validity was largely supported by confirmatory factor analysis and correlations between the MPAQ and other instruments. Intraclass correlation coefficients ranged from 0.61 to 0.80 and SRDsgroup from 0.10 to 0.13. Mean change was larger (0.54) than was SRDgroup (0.11) in patients who had deteriorated, but smaller in patients who had improved (0.07).

Conclusions

The MPAQ has good content and construct validity and moderate reproducibility. Responsiveness is weak, although better for deterioration than for improvement.

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