[Validation of Brazilian Portuguese version of quality of life questionnaire for women with endometriosis (Endometriosis Health Profile Questionnaire--EHP-30)].
OBJECTIVE
the objective of the present study was the development of the Brazilian Portuguese version of Endometriosis Health Profile Questionnaire (EHP-30), the cross-cultural adaptation to Brazil and the evaluation of EHP-30 Portuguese psychometric measures in a Brazilian sample.


METHODS
the original instrument in English was translated into Portuguese following international guidelines, going through all stages of translation, back-translation and comparison of the versions for cross-cultural adaptation, face and content validity. A sample of 54 patients with endometriosis was used for internal consistency analyses using the Cronbach alpha. Test-retest reliability was evaluated through the intraclass correlation coefficient (ICC). In order to evaluate the convergent construct validity, the correlation between EHP-30 Portuguese and WHOQOL-Bref and Beck Depression Inventory (BDI) was tested.


RESULTS
internal consistency presented alpha values of 0.8 to 0.9 suggesting homogeneity between questions. The test-retest reliability presented ICC of 0.8 to 0.9 showing instrument stability. In the construct validation, strong correlations were demonstrated of the EHP-30 Portuguese self-image scale with physical (-0.6) and psychological domains (-0.6) of WHOQOL-Bref, and EHP-30 Portuguese social support scale with BDI (0.5), confirming good correlation with other quality of life evaluation instruments.


CONCLUSIONS
the EHP-30 Portuguese was found to be an easy, quickly applied instrument, and well-accepted by the patients. It presented good psychometric properties with appropriate reliability measures (internal consistency and test-retest reliability) and construct validity. These results show that EHP-30 Portuguese is an adequate instrument for quality of life evaluation in Brazilian women with endometriosis, both in clinical and research setting.
Mengarda
Cláudia Vieira
CV
Consultora da Secretaria Estadual da Saúde do Rio Grande do Sul, Porto Alegre, RS, Brazil. claudiamengarda@yahoo.com
Passos
Eduardo Pandolfi
EP
Picon
Patrícia
P
Costa
Andry Fiterman
AF
Picon
Paulo Dornelles
PD
D000328:Adult; D001938:Brazil; D004715:Endometriosis; D005260:Female; D005831:Genital Diseases, Female; D006801:Humans; D007802:Language; D011788:Quality of Life; D011795:Surveys and Questionnaires; D055815:Young Adult