Fecal incontinence quality of life scale
Todd RockwoodJames M. ChurchJames W. FleshmanRobert L KaneConstantinos MavrantonisAlan G. ThorsonSteven D. WexnerDonna Z. BlissAnn C. Lowry
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Abstract:
This goal of this research was to develop and evaluate the psychometrics of a health-related quality of life scale developed to address issues related specifically to fecal incontinence, the Fecal Incontinence Quality of Life Scale.The Fecal Incontinence Quality of Life Scale is composed of a total of 29 items; these items form four scales: Lifestyle (10 items), Coping/Behavior (9 items), Depression/Self-Perception (7 items), and Embarrassment (3 items).Psychometric evaluation of these scales demonstrates that they are both reliable and valid. Each of the scales demonstrate stability over time (test/retest reliability) and have acceptable internal reliability (Cronbach alpha >0.70). Validity was assessed using discriminate and convergent techniques. Each of the four scales of the Fecal Incontinence Quality of Life Scale was capable of discriminating between patients with fecal incontinence and patients with other gastrointestinal problems. To evaluate convergent validity, the correlation of the scales in the Fecal Incontinence Quality of Life Scale with selected subscales in the SF-36 was analyzed. The scales in the Fecal Incontinence Quality of Life Scale demonstrated significant correlations with the subscales in the SF-36.The psychometric evaluation of the Fecal Incontinence Quality of Life Scale showed that this fecal incontinence-specific quality of life measure produces both reliable and valid measurement.Keywords:
Fecal Incontinence
Convergent validity
Cronbach’s alpha is a very commonly used method in biomedical research. Cronbach’s alpha Indicates the extent to which the items in your questionnaire are related to each other, a useful coefficient for assessing the internal consistency of the items. Although this method is commonly used in medical research, the statistical software packages do not have the direct menu-driven operation for Cronbach’s alpha. Hence this paper intends to provide an R function (Cronbach. Alpha) for Cronbach’s alpha analysis.
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Cronbach’s alpha (α) is the most widely used statistic denoting a scale’s internal reliability. Higher internal reliability is associated with greater confidence in the scale and the associated conclusions made from the results. Cronbach’s alpha is often used without consideration of the factors which may mediate coefficient statistics. The current report provides suggestions for future authors to improve their understanding of, inferences made from, and writing about Cronbach’s alpha.
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Aim To explore concurrent validity, convergent validity, interrater reliability, test–retest reliability, and Rasch model analysis of the School Participation Questionnaire (SPQ), a tool for teachers to assess personal and environmental determinants of school participation. Method Teachers of children with additional support needs, including intellectual disability, autism, and learning difficulties completed measures. Data were collected using the SPQ and the Participation and Environment Measure for Children and Youth (PEM‐CY). Test–retest and interrater reliability were assessed using intraclass correlation coefficients (ICCs). Internal consistency was assessed with Cronbach’s alpha. Concurrent and convergent validity were explored via correlations with the PEM‐CY. Further psychometrics were examined using a Rasch model. Results One hundred and eighty‐seven children (136 [72.7%] male; mean age 9y [range 5y 6mo–12y 10mo, SD 2y]) were assessed by 67 teachers. Cronbach’s alpha, test–retest, and interrater reliability were acceptable–excellent across each SPQ scale (alphas=0.89, 0.9, 0.94, 0.79; test–retest ICCs=0.64, 0.61, 0.78, 0.62; interrater ICCs=0.85, 0.71, 0.90, 0.81). Concurrent and convergent validity were confirmed with significant positive correlations between SPQ and PEM‐CY. After Mokken and Rasch model analysis, person and item reliability were good, and unidimensionality was confirmed. Mean administration time was 8.2 minutes. Interpretation The results suggest that the SPQ is a rapid, reliable, and valid tool for assessment of participation‐related indicators in schools.
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OBJECTIVE : To compare the reliability and convergent validity of instruments assessing quality of life in Brazilian older adults. METHODS : Cross-sectional study of 278 literate, community-dwelling older adults attending a municipal university for the elderly in Sao Carlos, SP, Southeastern Brazil between 2006 and 2008. The Brazilian versions of the SF-36 and WHOQOL-BREF instruments to assess quality of life were compared. Cronbach’s alpha coefficient was used to estimate reliability and Pearson’s correlation for comparison between the two scales. RESULTS : Most of participants were women (87.8%) with a mean age of 63.83±7.22 years. Both scales showed an acceptable internal consistency – WHOQOL-BREF Cronbach’s alpha was 0.832 and SF-36 was 0.868. There was a weak (r ≤ 0.6) correlation between the related fields in the two questionnaires. CONCLUSIONS : The SF-36 and WHOQOL-BREF are reliable instruments for clinical and research uses in Brazilian older women. To select one, researchers should consider which aspects of quality of life they aim to capture because of weak convergent validity signs. This study’s results indicate that WHOQOL-BREF may be more relevant to evaluate changes in the quality of life of older women because it prioritizes responses to the aging process and avoids focusing on impairment.
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Summary Introduction: Patients operated for correction of anorectal malformations (ARM) can develop fecal incontinence, constipation, and soiling, with loss in quality of life. Objective: To evaluate, through the use of questionnaires, fecal continence, and quality of life of children in the late postoperative follow-up of ARM correction, both high and low. In addition, the levels of fecal continence and quality of life were compared with those of a control group. Method: A Fecal Continence Index Questionnaire (ICF) and a Questionnaire for Assessment of Quality of Life Related to Fecal Continence in Children and Adolescents (QQVCFCA) were administered to 63 patients with ARM, aged from 7 to 19 years, whose surgical treatment had been completed for at least 6 months. The patients were compared to a control group of 59 children. Results: In the control group, 25 (42.4%) patients had good continence and 34 (57.6%), normal continence. We found that the quality of life in children with ARM is compromised globally, in all areas and in the ICF questionnaire, compared to controls (p<0.001). There was no difference between patients with high and low defects. Thirty-two (50.8%) patients had other associated anomalies. Conclusion: In patients operated for ARM correction, quality of life and ICF were compromised, and there was no difference between patients with high-type and low-type of the disease. In about half the cases there are other associated malformations.
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The Personality Assessment Inventory (PAI) has been translated into different languages (e.g., Spanish, German, and Greek) and several authors investigated psychometric properties, internal structure, and the convergent validity of translated versions of the PAI. Recently, an Italian version of the test has been published, but its psychometric properties has never been explored. The aims of the present study were: (a) to examine the hypothesized subscale structure of scales that have subscales, (b) to evaluate the internal structure of the 22 PAI full scales, and (c) to report on the convergent validity of the PAI scales with the Millon Clinical Multiaxial Inventory-III (MCMI-III) scales. The sample consisted of 1,538 participants recruited from all over Italy. Our findings provided support to the cross-cultural applicability of the PAI and contributed to enhance confidence in the validity and utility of the PAI. (PsycINFO Database Record
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Abstract In this article distinctions are made among some of the different conceptualizations of, and formulas for, Cronbach's coefficient alpha as it is applied to dichotomous or nondi‐chotomous, standardized or unstandardized, and weighted or unweighted data. Issues regarding the statistical significance of alpha and the occasionally encountered anomalies of artificially high alpha and negative values of alpha are given particular attention.
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Background: Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease with adverse physical and psychosocial impacts. The development of an HS quality-of-life measure, HS-QoL, has been recently described. Objective: This study was designed to validate the HS-QoL. Method: Fifty-five patients with HS from 4 dermatology clinics completed the 30-minute online survey. Item reduction, reliability (internal consistency), and correlation analysis (to assess convergent validity) were conducted. Results: The HS-QoL was reduced from 53 items to 44 items, resulting in a 7-subscale questionnaire. All subscales demonstrated excellent internal consistency, except for the support subscale, which had adequate internal consistency. All 7 HS-QoL subscales were related to other measures of QoL, life satisfaction, and mental health, which demonstrates convergent validity. Conclusion: The 44-item HS-QoL demonstrated strong preliminary evidence of reliability (internal consistency) and convergent validity.
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