Changes to the subscales of two vision-related quality of life questionnaires are proposed

Boer, Michiel R. de; Vet, Henrica C.W. de; Terwee, Caroline B.; Moll, Annette C.; Völker-Dieben, H. J. M.; Rens, Ger H. M. B. van

doi:10.1016/j.jclinepi.2005.04.007

Cited by 66 publications

(64 citation statements)

References 27 publications

(33 reference statements)

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“…To prepare for the IRT analysis, a new factor analysis was carried out. Again, this led to a slightly different distribution of LVQOL items over sub-scales compared with the previous reports by de Boer et al [6] and Wolffsohn et al [3]. As a result of the IRT analysis, we found that the ''reading and fine work'' dimension appeared to be measuring another construct at follow-up.…”

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confidence: 64%

“…Refs. [2][3][4][5][6][7][8]) did not appear in the output. However, by entering ''visual impairment'' as free text instead of ''macular degeneration'' with the same limitations as used by Finger et al (i.e.…”

mentioning

confidence: 98%

“…This became clear to us because the work of Massof on visual function questionnaires (VFQs) [2], Wolffsohn et al [3,4] and Zou et al [5] on the Low Vision Quality Of Life questionnaire (LVQOL), and our own work on the LVQOL and the Vision-related quality of life Core Measure (VCM1) [6][7][8] was absent. All these studies were carried out among visually impaired populations, which included AMD patients.…”

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confidence: 99%

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Additional psychometric information and vision-specific questionnaires are available for age-related macular degeneration

Nispen

Boer²,

Rens

2008

Qual Life Res

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Purpose To present psychometric information and studies dealing with questionnaires for age-related macular degeneration (AMD) and visually impaired patients in addition to the study by Finger et al. ''Quality of life in AMD: a review of available vision-specific psychometric tools''. We propose that their literature search should not have focused solely on the specific eye disease AMD. Methods The literature search was partly replicated (PubMed) by using ''visual impairment'' instead of ''macular degeneration'' as free text words. Psychometric information was obtained from the additional studies. Preliminary results from a differential item functioning (DIF) analysis used to examine the relationship between item responses on the Vision-related quality of life Core Measure (VCM1) of AMD patients versus patients with other eye conditions are discussed. Results Eight studies of visually impaired patient populations, including AMD patients, are discussed, with psychometric information from six vision-specific questionnaires. The VCM1 items did not present DIF, which means that the items were equally interpreted by all patients. Conclusions The results on DIF and the additional studies presented here confirm that a specific eye disorder is of minor importance in the choice of a vision-specific questionnaire or, in this case, a literature search.

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confidence: 98%

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confidence: 99%

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Additional psychometric information and vision-specific questionnaires are available for age-related macular degeneration

Nispen

Boer²,

Rens

2008

Qual Life Res

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“…In a homogeneous population, the within-subject variance can easily overwhelm the between-subject variance, making for low reliability [28]. The SEM is relatively sample-independent and useful in the interpretation of HRQoL change [29,30]. A higher SEM value for the EQ VAS score after 1 month was reported recently [31].…”

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confidence: 99%

Validation of the EQ-5D in a general population sample in urban China

et al. 2011

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“…Anchor based methods, resorting a GPE scale, used to analyze responsiveness validity and to achieve MIC value, was reported as a reliable and valid measure of health change perceived by patients and considered the best measure from individual perspective. However, a retrospective rating of change obtained over an extended period of time are susceptible to recall bias (28,29) . Furthermore, the 3 months' follow-up to evaluate clinical perceived change by patients is probably not enough, since this is a chronic disability which may not change much in such a short period of time.…”

Section: Validitymentioning

confidence: 99%

Renzi Score for Obstructed Defecation Syndrome - Validation of the Portuguese Version According to the Cosmin Checklist

Caetano

Dias

Cruz

et al. 2018

Arq. Gastroenterol.

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-Background -Recently, the Obstructed Defecation Syndrome score (ODS score) was developed and validated by Renzi to assess clinical staging and to allow evaluation and comparison of the efficacy of treatment of this disorder. Objective -Our goal is to validate the Portuguese version of Renzi ODS score, according to the Consensus based Standards for the selection of the Health Measurement Instruments (COSMIN) checklist. Methods -Following guidelines for cross-cultural validity, Renzi ODS score was translated into the Portuguese language. Then, a group of patients and healthy controls were invited to fill in the Renzi ODS score at baseline, after 2 weeks and 3 months, respectively. We assessed internal consistency, reliability and measurement error, content and construct validity, responsiveness and interpretability. Results -A total of 113 individuals (77 patients; 36 healthy controls) completed the questionnaire. Seventy and 30 patients repeated the Renzi ODS score after 2 weeks and 3 months respectively. Factor analysis confirmed the unidimensionality of the scale. Cronbach's α coefficient of 0.77 supported item's homogeneity. Weighted quadratic kappa of 0.89 established test-retest reliability. The smallest detectable change at the individual level was 2.66 and at the group level was 0.30. Renzi ODS score and the total (-0.32) and physical (-0.43) SF-36 scores correlated negatively. Patient and control's groups significantly differed (11 points). The change score of Renzi ODS score between baseline and 3 months correlated negatively with the clinical evolution (-0.86). ROC analysis showed minimal important change of 2.00 with AUC 0.97. Neither floor nor ceiling effects were observed. Conclusion -This work validated the Portuguese version of Renzi ODS score. We can now use this reliable, responsive, and interpretable (at the group level) tool to evaluate Portuguese ODS patients.

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Changes to the subscales of two vision-related quality of life questionnaires are proposed

Cited by 66 publications

References 27 publications

Additional psychometric information and vision-specific questionnaires are available for age-related macular degeneration

Additional psychometric information and vision-specific questionnaires are available for age-related macular degeneration

Validation of the EQ-5D in a general population sample in urban China

Renzi Score for Obstructed Defecation Syndrome - Validation of the Portuguese Version According to the Cosmin Checklist

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