Cultural adaptation and validation of the instrument "Diabetes - 39 (D- 39)": version for brazilian with diabetes mellitus type 2 - step 1 / Adaptação cultural e validação do instrumento diabetes - 39 (D-39): versão para brasileiros com diabetes mellitus tipo 2 - fase 1

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Diabetes mellitus is considered an important public health problem which for the decurrent consequences of its complications and treatment, could affect the life quality of the attacked people. The concepts carried by the literature about the Life Quality have focused the perception of the people about their experiences and satisfaction regarding to certain areas which compose the human nature. In the last decades, a major interest concerning to the achievement of new indicators for the results of the evaluation of the clinical intervention have increased in such way to ensure a major resolutivity of the heath problems. In this context appears studies of Health-Related Quality Life related to health which constitute in a multidimensional model to include the several human life aspects, in which the person is primary source of information to express the disease and treatment consequences in his daily life. The literature brings specific instruments to evaluate the health-related quality life. We understand that the specific instruments could bring focused informations on the reality which is intended to act. Among the specific intruments of quality of the people with diabetes, it was identified the instrument D-39 to evaluate the life quality of the people with diabetes mellitus. In this way, the aim of this study was to adapt to Portuguese and to develop a prime phase of the validation process in a pilot study. It deals with a transversal study with a methodological character with psychometric analysis in the simulation of the field test for the validity (face and construct) and the reliability of the adapted version in a sample of Brazilians with Type 2 diabetes mellitus. This instrument is composed of 39 items divided in five domains (Diabetes Control, Anxiety and Preoccupation, Social Burden, Sexual Behavior and Energy and Mobility). This study was performed in Basic Health Unity in a convenience sample, composed by 52 people with Type 2 diabetes mellitus. The adaptation process followed the following methodological steps: translation of the D-39 to Portuguese; evaluation by a Committee of Judges; "back-translation" of the version to english, comparison of both English versions; semantical analysis of the items; pre-test of the adapted version and application of the final version in Portuguese among the participants. It was found predominance of female people (65,4%), living together partners with conjugal bonds or with children (75%), age between 45 and 84 years of age, average = 62,8 anos (DP = 8,6) and low scholarity (71,1%). The average time of disease was 9,15 years (DP = 4,2); concerning to the 11 treatment 23 participants did not use insulin (23/52; 44,2%) and 29 participants used insulin (29/52; 55,8%). Concerning to the comorbities it was identified that 84,6% of the people were overweight and obesity; the average valor systolic arterial pressure was 136,15 mmHg (DP=22) and diastolic arterial pressure 80,57 mmHg (DP=13,34). In the adapted version of the instrument D-39, the answers varied from 1 to 7; the possible interval, for the 39 items varied from 49 to 217, and how much the larger value is, the worse the evaluation of the quality life will be. It was obtained average total average of the instrument of (152,5 DP = 38,6). For the construct validity, it was verified the convergence and the divergency among the items of the D-39. The D-39 it made possible to discriminate well among the people who used and those who did not use the insulin. It had moderate correlations among the domains Diabetes Control and Anxiety and Preoccupation (0,52), Diabetes Control and Sexual Behavior (0,55), Anxiety and Preoccupation and Energy and Mobility (0,46), Social Burden and Sexual Behavior (0,58), Social Burden and Energy and Mobility (0,56), Sexual Behavior and Energy and Mobility (0,60) and strong correlation among the domains Diabetes Control and Energy and Mobility (0,64). The internal consistency, represented by Cronbachs alpha, showed significant results for the total of the instrument (0,91) and values varying from 0,58 to 0,85 among the domains. According to these results, it was concluded that the adapted version to Portuguese of the D- 39 answer the validity and reliability criterion and required for an evaluation instrument of the Health-Related Quality of Life (HRQL), maintaining the properties of the original version.

ASSUNTO(S)

quality of life estudos de validação validation studies diabetes mellitus tipo 2 qualidade de vida type 2 diabetes mellitus

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