Research Committee, Midwifery Department, Tabriz University of Medical sciences, Tabriz, Iran.
Tabriz Health Services Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
J Obstet Gynaecol. 2022 Aug;42(6):2341-2348. doi: 10.1080/01443615.2022.2049726. Epub 2022 Apr 28.
Endometriosis is one of the leading gynecological disorders in reproductive ages. About two-thirds of women with endometriosis experience chronic pelvic pain. There are different methods for the assessment of pain in endometriosis. One of these questionnaires is endometriosis painful symptoms-4 dimensions (ENDOPAIN-4D) questionnaire, which has not been validated in Iran. Therefore, we decided to conduct a study to determine the psychometric properties of this questionnaire. In this study, we randomly selected 169 women with endometriosis from two educational-medical centres of Al-Zahra and Taleghani in Tabriz, Iran, in 2020. We evaluated the validity of ENDOPAIN-4D in terms of face, content, and structure (through exploratory and confirmatory factor analyses). We used internal consistency assessment and test-retest reliability to determine the questionnaire reliability. In this study, the CVI and CVR for the ENDOPAIN-4D instrument were obtained as 0.99 and 0.98, respectively. In the exploratory factor analysis, we extracted a four-factor structure, and the confirmatory factor analysis gave a good fit for the extracted model. We obtained Cronbach's alpha coefficient as 0.96 and the intra-class correlation coefficient (ICC) (at 95% confidence interval) as 0.94 (0.85 to 0.98). The Persian version of ENDOPAIN-4D has acceptable content validity, construct validity and reliability for the evaluation of pelvic pain and gynaecology in Iranian women with endometriosis.Impact Statement There are different methods for the assessment of pain in endometriosis. But there is no specific psychometric instrument to determine the painful symptoms of endometriosis in Iran so far. The Persian version of ENDOPAIN-4D is a valid and reliable instrument for the evaluation of pelvic pain and gynaecology in Iranian women with endometriosis. The validation of the Persian version of the ENDOPAIN-4D questionnaire leads to correct assessment of painful symptoms in Iranian women with endometriosis and will be useful in evaluating the patients' pain intensity and the response to treatment in practice.
子宫内膜异位症是生殖年龄段女性主要的妇科疾病之一。大约三分之二的子宫内膜异位症患者经历慢性盆腔疼痛。有不同的方法来评估子宫内膜异位症的疼痛。其中一种问卷是子宫内膜异位症疼痛症状-4 维度（ENDOPAIN-4D）问卷，但尚未在伊朗得到验证。因此，我们决定进行一项研究，以确定该问卷的心理测量特性。在这项研究中，我们于 2020 年在伊朗大不里士的 Al-Zahra 和 Taleghani 两所教育医疗中心随机选择了 169 名患有子宫内膜异位症的女性。我们评估了 ENDOPAIN-4D 在表面、内容和结构方面的有效性（通过探索性和验证性因素分析）。我们使用内部一致性评估和重测信度来确定问卷的可靠性。在这项研究中，ENDOPAIN-4D 工具的 CVI 和 CVR 分别为 0.99 和 0.98。在探索性因素分析中，我们提取了一个四因素结构，验证性因素分析为提取模型提供了良好的拟合。我们得到 Cronbach's alpha 系数为 0.96，组内相关系数（ICC）（在 95%置信区间内）为 0.94（0.85 至 0.98）。ENDOPAIN-4D 的波斯语版本具有可接受的内容有效性、结构有效性和可靠性，可用于评估伊朗子宫内膜异位症女性的盆腔疼痛和妇科疾病。
影响陈述 在子宫内膜异位症的疼痛评估中有不同的方法。但到目前为止，伊朗还没有专门的心理测量工具来确定子宫内膜异位症的疼痛症状。ENDOPAIN-4D 的波斯语版本是一种有效的、可靠的工具，可用于评估伊朗子宫内膜异位症女性的盆腔疼痛和妇科疾病。ENDOPAIN-4D 问卷的波斯语版本的验证导致了对伊朗子宫内膜异位症女性疼痛症状的正确评估，并将有助于在实践中评估患者的疼痛强度和对治疗的反应。
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