SETTING: Although the St George's Respiratory Questionnaires in Mandarin-Chinese (SGRQ-MC) have been used in China, few data are available on the translation and adaptation process, psychometric properties and clinical meaning. It is therefore difficult to adequately evaluate the equivalence of this instrument in Chinese populations. OBJECTIVE: To evaluate the psychometric properties of a culturally translated SGRQ-MC, and to estimate clinically important differences (CID) for the SGRQ in chronic obstructive pulmonary disease (COPD) patients in China. DESIGN: SGRQ was translated into Mandarin using standardised forward and backward translation procedures. Health status and clinical data were collected at baseline in 491 patients with stable COPD and again after 1 week in 131 randomly selected patients. All patients were followed up monthly and assessed during exacerbations and at 1 year. RESULTS: The SGRQ-MC showed good internal consistency, test-retest reliability, convergent validity and known-group validity. Responsiveness was shown by significant changes in SGRQ-MC scores between stable stage and exacerbation (P<0.0001). The estimated CID for the total score ranged from 3.1 (95%CI -0.3-6.5) to 7.7 (95%CI -1.7-17.2). CONCLUSION: This SGRQ-MC is a reliable, valid and responsive instrument for quality of life evaluation in COPD patients in China. As it is culturally and clinically equivalent to other versions, measures can be compared among countries.
SETTING: Although the St George's Respiratory Questionnaires in Mandarin-Chinese (SGRQ-MC) have been used in China, few data are available on the translation and adaptation process, psychometric properties and clinical meaning. It is therefore difficult to adequately evaluate the equivalence of this instrument in Chinese populations. OBJECTIVE: To evaluate the psychometric properties of a culturally translated SGRQ-MC, and to estimate clinically important differences (CID) for the SGRQ in chronic obstructive pulmonary disease (COPD) patients in China. DESIGN: SGRQ was translated into Mandarin using standardised forward and backward translation procedures. Health status and clinical data were collected at baseline in 491 patients with stable COPD and again after 1 week in 131 randomly selected patients. All patients were followed up monthly and assessed during exacerbations and at 1 year. RESULTS: The SGRQ-MC showed good internal consistency, test-retest reliability, convergent validity and known-group validity. Responsiveness was shown by significant changes in SGRQ-MC scores between stable stage and exacerbation (P<0.0001). The estimated CID for the total score ranged from 3.1 (95%CI -0.3-6.5) to 7.7 (95%CI -1.7-17.2). CONCLUSION: This SGRQ-MC is a reliable, valid and responsive instrument for quality of life evaluation in COPDpatients in China. As it is culturally and clinically equivalent to other versions, measures can be compared among countries.
Authors: Paul W Jones; Heather Gelhorn; Hilary Wilson; Victoria S Benson; Niklas Karlsson; Shailendra Menjoge; Hana Müllerova; Stephen I Rennard; Ruth Tal-Singer; Debora Merrill; Maggie Tabberer Journal: Chronic Obstr Pulm Dis Date: 2017-04-01
Authors: Anees Ur Rehman; Mohamed Azmi Ahmad Hassali; Sabariah Noor Harun; Sameen Abbas; Jaya Muneswarao; Irfhan Ali Bin Hyder Ali; Rabia Hussain Journal: Health Qual Life Outcomes Date: 2020-05-13 Impact factor: 3.186
Authors: Brooks W Morgan; Matthew R Grigsby; Trishul Siddharthan; Robert Kalyesubula; Robert A Wise; John R Hurst; Bruce Kirenga; William Checkley Journal: BMJ Open Respir Res Date: 2018-07-11