Investigation of the reproducibility and validity of a questionnaire on usual bowel movement patterns and stool characteristics compared to an evacuation diary
Investigation of the reproducibility and validity of a questionnaire on usual bowel movement patterns and stool characteristics compared to an evacuation diary
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与排便日记相比，调查关于通常排便模式和粪便特征的问卷的再现性和有效性
DOI：
10.11236/jph.20-037
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
宮地 元彦
中科院分区：
文献类型：
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作者：
大野 治美;村上 晴香;中潟 崇;谷澤 薫平;小西 可奈;宮地 元彦
客观粪便反映了我们的饮食和营养状况以及肠道菌群的特征；因此，粪便可以作为评价身体健康和营养摄入的一个方便、无创的指标。然而，关于对粪便进行全面且易于执行的客观评估的适当工具的研究很少。因此，需要有效的调查问卷来准确确定每日排便模式（“常规排便”）和粪便特征。在这里，我们创建了一个评估工具来确定粪便特征（体积、颜色、形状等）。为了研究该工具的有效性，我们将结果与疏散日记数据进行了比较，其中要求参与者记录疏散次数和粪便特征。方法本研究包括35名成年男性和女性，年龄22-78岁（45.2±17.1岁）。对受试者最近一个月的日常粪便特征进行问卷调查，包括平均排便次数、每次排便的粪便量、粪便颜色和形状、粪便漂浮和腹胀。为确保本次调查问卷各项目的重复性，本次调查进行了两次。此后，使用疏散日记，其中受试者记录一周的每日疏散次数和粪便特征。使用疏散日记作为疏散次数和粪便特征的有效标准，我们比较了日记和通常的粪便调查问卷之间的反应。此外，问卷对避难次数的回答有两种类型，即表示避难次数的类别的多项选择和使用数值的开放式回答。结果通过 Spearman 等级相关系数对日常粪便问卷的再现性进行评估，结果显示所有项目均显着相关（ρ= 0.431-0.911）。加权κ系数也表现出较高的一致性（加权κ=0.348-0.841）。通过比较疏散日记和通常的粪便调查问卷之间每一周的疏散次数来评估有效性。在每周疏散次数的开放响应中观察到更高的相关性（ρ = 0.855）。对一周排便日记和通常粪便问卷中粪便特征反应中值之间相关性的评估显示，除“粪便漂浮”之外的所有项目均具有显着相关性（ρ=0.429-0.800）。结论 我们证实了本研究中创建的用于评估通常排便模式和粪便特征的问卷具有高重复性和有效性。
Objective Stool reflect our dietary and nutritional status as well as the characteristics of gut microbiota; thus, stool can be a convenient, noninvasive index for the evaluation of physical health and nutritional intake. However, there are few studies on appropriate tools for comprehensive and easy-to-perform objective assessments of stool. Therefore, there is a need for an effective questionnaire to accurately ascertain daily bowel movement patterns (" usual evacuation") and stool characteristics. Herein, we have created an assessment tool to determine stool characteristics (volume, color, form, etc.). To investigate the validity of this tool, we compared the results with evacuation diary data wherein the participants were asked to record the number of evacuations and stool characteristics. Methods This study included 35 adult men and women, aged 22-78 years (45.2±17.1 years). A questionnaire was administered to the subjects on usual stool characteristics for the most recent month, including the average number of evacuations, stool volume per evacuation, stool color and form, stool float, and abdominal bloating. To confirm the reproducibility of each item of this questionnaire, the survey was performed twice. Thereafter, an evacuation diary was used, wherein the subjects recorded the daily number of evacuations and stool characteristics for one week. Using the evacuation diary as the valid criterion for the number of evacuations and stool characteristics, we compared responses between the diary and the usual stool questionnaire. Additionally, the questionnaire had two types of responses for the number of evacuations, namely, multiple choice for categories indicating the number of evacuations and open answers using numerical values. Results Assessment of the reproducibility of the questionnaire on usual stool by Spearman rank correlation coefficients showed a significant correlation (ρ= 0.431-0.911) for all items. The weighted κ coefficient also showed high coincidence (weighted κ= 0.348-0.841). Validity was assessed by comparing the number of evacuations per one-week period between the evacuation diary and the usual stool questionnaire. A higher correlation (ρ= 0.855) was observed in the open responses for the number of evacuations per one-week period. Assessment of the correlations between median values for responses to stool characteristics in the one-week evacuation diary and the usual stool questionnaire showed significant correlation (ρ= 0.429-0.800) for all items except for" stool float". Conclusion We confirmed the high reproducibility and validity of the questionnaire created in this study for the assessment of usual bowel movement patterns and stool characteristics.