Background:To validate the Catquest-9SF questionnaire in Italian,assess the change in visual disability with cataract surgery and determine the correlation between pre-operative Catquest-9SF scores and Lens Opacities ...Background:To validate the Catquest-9SF questionnaire in Italian,assess the change in visual disability with cataract surgery and determine the correlation between pre-operative Catquest-9SF scores and Lens Opacities Classification System(LOCS)III cataract grading.Methods:Prospective,questionnaire validation study.The Catquest-9SF questionnaire was forward and back translated and completed by 209 Italian patients before and three months following cataract surgery.Rasch analysis was used to assess its psychometric properties.Results:The Italian Catquest-9SF demonstrated ordered response categories,unidimensionality(item fit statistics range:0.73–1.34),adequate person separation(2.04),and no differential item functioning.Mistargeting was evident with a mean difference in item difficulty and person ability of 2.04 logits but improved with inclusion of pre-operative data only.There was a statistically significant(Friedman tests,p<0.001)median improvement in visual disability of 1.92,3.57,1.44 and 2.94 logits in patients undergoing first eye surgery with and without ocular comorbidity,and second eye surgery with and without ocular comorbidity respectively.There was no statistically significant difference in the improvements among the four groups(Kruskal-Wallis H test,X^(2)(3)=5.445,p=0.142).There was no correlation between Catquest-9SF scores and nuclear opalescence(r_(s)=0.049,p=0.478),nuclear colour(r_(s)=0.008,p=0.909),cortical(r_(s)=0.066,p=0.341),and posterior subcapsular components(r_(s)=0.048,p=0.494).Conclusions:The Italian Catquest-9SF demonstrated good psychometric properties and is suitable for use in Italian speaking patients.There were similar improvements in visual disability in patients undergoing first or second eye surgery,with or without ocular comorbidity.There was no correlation between pre-operative Catquest-9SF scores and LOCS III cataract grading.展开更多
Background:The Catquest-9SF questionnaire is a patient reported outcome measure that quantifies the visual benefits from cataract surgery.The purpose of this study was to translate and adapt the Catquest-9SF questionn...Background:The Catquest-9SF questionnaire is a patient reported outcome measure that quantifies the visual benefits from cataract surgery.The purpose of this study was to translate and adapt the Catquest-9SF questionnaire for France,to assess its psychometric properties via Rasch analysis,and to assess its validity when completed using an electronic notepad.Methods:The Catquest-9SF questionnaire was translated following the guidelines of the International Society for Pharmacoeconomics and Outcomes Research.Catquest-9SF and clinical data were collected from patients before and after routine cataract surgery.All questionnaire data were collected via an electronic notepad.Rasch analysis was performed to assess psychometric properties,and sensitivity to change was analysed for patients with complete paired pre-and post-operative questionnaires.Results:A complete filled-in preoperative questionnaire was obtained for 848 patients.Rasch analysis showed good precision(person separation:2.32,person reliability:0.84),ordered category probability curves,no item misfit,and unidimensionality.The respondents were slightly more able than the level of item difficulty(targeting:−1.12 logits).Sensitivity was analysed on 211 paired questionnaires,and the postoperative questionnaires showed a clear ceiling effect.The effect size was 2.6.The use of an electronic notepad for completing the questionnaire worked out very well after some adjustments.Conclusions:The French version of Catquest-9SF has good psychometric properties and is suitable for use in French-speaking patients.The use of the Catquest-9SF questionnaire in an electronic format showed good validity.展开更多
基金Colm McAlinden was funded in part from a grant from the European Society of Cataract and Refractive Surgeons(ESCRS).
文摘Background:To validate the Catquest-9SF questionnaire in Italian,assess the change in visual disability with cataract surgery and determine the correlation between pre-operative Catquest-9SF scores and Lens Opacities Classification System(LOCS)III cataract grading.Methods:Prospective,questionnaire validation study.The Catquest-9SF questionnaire was forward and back translated and completed by 209 Italian patients before and three months following cataract surgery.Rasch analysis was used to assess its psychometric properties.Results:The Italian Catquest-9SF demonstrated ordered response categories,unidimensionality(item fit statistics range:0.73–1.34),adequate person separation(2.04),and no differential item functioning.Mistargeting was evident with a mean difference in item difficulty and person ability of 2.04 logits but improved with inclusion of pre-operative data only.There was a statistically significant(Friedman tests,p<0.001)median improvement in visual disability of 1.92,3.57,1.44 and 2.94 logits in patients undergoing first eye surgery with and without ocular comorbidity,and second eye surgery with and without ocular comorbidity respectively.There was no statistically significant difference in the improvements among the four groups(Kruskal-Wallis H test,X^(2)(3)=5.445,p=0.142).There was no correlation between Catquest-9SF scores and nuclear opalescence(r_(s)=0.049,p=0.478),nuclear colour(r_(s)=0.008,p=0.909),cortical(r_(s)=0.066,p=0.341),and posterior subcapsular components(r_(s)=0.048,p=0.494).Conclusions:The Italian Catquest-9SF demonstrated good psychometric properties and is suitable for use in Italian speaking patients.There were similar improvements in visual disability in patients undergoing first or second eye surgery,with or without ocular comorbidity.There was no correlation between pre-operative Catquest-9SF scores and LOCS III cataract grading.
文摘Background:The Catquest-9SF questionnaire is a patient reported outcome measure that quantifies the visual benefits from cataract surgery.The purpose of this study was to translate and adapt the Catquest-9SF questionnaire for France,to assess its psychometric properties via Rasch analysis,and to assess its validity when completed using an electronic notepad.Methods:The Catquest-9SF questionnaire was translated following the guidelines of the International Society for Pharmacoeconomics and Outcomes Research.Catquest-9SF and clinical data were collected from patients before and after routine cataract surgery.All questionnaire data were collected via an electronic notepad.Rasch analysis was performed to assess psychometric properties,and sensitivity to change was analysed for patients with complete paired pre-and post-operative questionnaires.Results:A complete filled-in preoperative questionnaire was obtained for 848 patients.Rasch analysis showed good precision(person separation:2.32,person reliability:0.84),ordered category probability curves,no item misfit,and unidimensionality.The respondents were slightly more able than the level of item difficulty(targeting:−1.12 logits).Sensitivity was analysed on 211 paired questionnaires,and the postoperative questionnaires showed a clear ceiling effect.The effect size was 2.6.The use of an electronic notepad for completing the questionnaire worked out very well after some adjustments.Conclusions:The French version of Catquest-9SF has good psychometric properties and is suitable for use in French-speaking patients.The use of the Catquest-9SF questionnaire in an electronic format showed good validity.
基金supported by grants from the National Natural Science Foundation of China(No.31272100,31372199)the Natural Science Foundation of Shanxi Province,China(No.2014011038-1)+1 种基金the National High Technology Research and Development Program of China(863 Program,No.2012AA020809)the Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi Province,China
