Abstract
BackgroundThe aim of the present paper was the assessment of the psychometric properties of the Polish language version of the Audit of Diabetes-Dependent Quality of Life (ADDQoL) questionnaire applied in Poland among patients with type 1 (T1DM) or type 2 diabetes (T2DM).MethodsThe studies were carried out among 330 patients with diabetes including 115 with T1DM and 215 with T2DM. In all the patients the level of the quality of life was investigated using the Polish language version of the ADDQoL and the psychometric properties were determined taking into consideration internal consistency, the factor loading and intraclass correlations.ResultsIt was demonstrated that the values of internal consistency determining the reliability of the Polish language version of the ADDQoL for the overall Cronbach’s alfa coefficient were 0.92 in the studied patients with T1DM and 0.93 in the studied patients with T2DM and the values of the loading factor were respectively 0.39–0.79 and 0.35–0.81. In the study of the correlation between the components of the ADDQoL the correlation coefficients proved to be highly statistically significant: in patients with T1DM r = 0.46–0.74 and in patients with T2DM – r = 0.42–0.80.ConclusionThe Polish language version of the ADDQoL is a reliable tool useful for the assessment of the level of the quality of life of adult patients with T1DM or T2DM in Poland and is recommended to be used among Polish-speaking patients with diabetes.
Highlights
The aim of the present paper was the assessment of the psychometric properties of the Polish language version of the Audit of Diabetes-Dependent Quality of Life (ADDQoL) questionnaire applied in Poland among patients with type 1 (T1DM) or type 2 diabetes (T2DM)
The ADDQoL questionnaire developed by Clare Bradley version 19 is a tool specific for diabetes which is used for examining the QoL both in patients with type 1 diabetes (T1DM) and patients with type 2 diabetes (T2DM) [4]
It consists of two general questions referring to the QoL; the first question determines the measurement of the general, present level of the QoL – it includes a 7-grade scale and the second question determines the concrete influence of diabetes on the QoL – it includes a 5-grade scale
Summary
The aim of the present paper was the assessment of the psychometric properties of the Polish language version of the Audit of Diabetes-Dependent Quality of Life (ADDQoL) questionnaire applied in Poland among patients with type 1 (T1DM) or type 2 diabetes (T2DM). The treatment procedure in diabetes generally consists in the proper control of the course of this disease with achieving optimum glycaemia results and prevention against the occurrence of complications. Diabetes-Specific Quality-of-Life Scale (DSQoLS) [7]. It has been demonstrated that significant impact on the lowering of the QoL in patients with diabetes is exerted by the complications related to this disease, by the necessity to take insulin and by the co-occurrence of obesity [11]. In another paper the patients with diagnosed diabetes related complications reported significantly lower total scores of the DSQoLS [12]
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