Development of an Endometriosis Quality-of-Life Instrument

Georgina Jones, Stephen Kennedy, A. Barnard, Josephine Wong, Crispin Jenkinson
In: Obstetrics & Gynecology · 2001 · vol. 98(2) , pp. 258–264 · doi:10.1097/00006250-200108000-00014 · W4235220721
article OA: closed CC0 ⤵ 14 in-corpus citations
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The Endometriosis Health Profile-30 was developed and validated as a patient-generated instrument to measure health-related quality of life dimensions important to women with endometriosis.

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Abstract

In Brief OBJECTIVE To describe a new disease-specific questionnaire with established measurement properties that addresses the dimensions of health-related quality of life considered important to women with endometriosis. METHODS The Endometriosis Health Profile-30 was developed in three stages. Stage 1 included open-ended exploratory interviews with 25 women to generate the items on the questionnaire. Stage 2 was an 87-item questionnaire administered in a postal survey to identify the most salient dimensions of health-related quality of life. In stage 3, the reliability and validity of the questionnaire were evaluated. RESULTS The final instrument contained a core questionnaire with 30 items and five scales: pain, control and powerlessness, emotional well-being, social support, and self-image. Six modular parts consisting of 23 questions were also developed and measured the areas of sexual intercourse, work, relationship with children, feelings about the medical profession, treatment, and infertility. All the scales achieved high internal reliability, with Cronbach's α coefficient ranging from 0.83 to 0.93 (core questionnaire) and 0.79 to 0.96 (modules). The intraclass correlation coefficients to evaluate the test-retest reliability were high (range 0.88–0.98, P < .001). Content validity was demonstrated as the questionnaire was developed from interviews of patients rather than existing literature and clinical scales. Construct validity was assessed by correlating the Endometriosis Health Profile-30 scales with the relevant Short Form-36 scales. High correlations for all comparisons were found (−0.41 to −0.73). CONCLUSION The Endometriosis Health Profile-30 is a reliable, valid, patient-generated instrument to measure the health-related quality of life of women with endometriosis. Its application in various health care settings will provide new and valuable information on the effect of endometriosis on health-related quality of life from the patients' perspective. The Endometriosis Health Profile-30 is a reliable and valid patient-generated instrument to measure the health-related quality of life of women with endometriosis.

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Outcome instruments

EHP-30

Condition tags

endometriosisinfertility

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (9)

Cited by (14)

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