Yu Ke1, Terence Ng1, Hui Ling Yeo1, Maung Shwe1, Yan Xiang Gan2, Alexandre Chan3,4,5. 1. Department of Pharmacy, National University of Singapore, Blk S4A level 3, 18 Science Drive 4, Singapore, 117543, Singapore. 2. Department of Pharmacy, National Cancer Centre Singapore, 11 Hospital Drive, Singapore, 169610, Singapore. 3. Department of Pharmacy, National University of Singapore, Blk S4A level 3, 18 Science Drive 4, Singapore, 117543, Singapore. phaac@nus.edu.sg. 4. Department of Pharmacy, National Cancer Centre Singapore, 11 Hospital Drive, Singapore, 169610, Singapore. phaac@nus.edu.sg. 5. Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore, 169857, Singapore. phaac@nus.edu.sg.
Abstract
BACKGROUND: There is a lack of psychometric data for both the English and Chinese versions of Beck Anxiety Inventory (BAI) to support its usage among breast cancer patients. This study examined the psychometric properties and measurement equivalence of the English and Chinese versions of BAI among breast cancer patients in Singapore. METHODS: Patients were recruited from two major cancer centers in Singapore. The criterion and construct validity of BAI was assessed by its correlation strength with (1) the emotional functioning subdomain of EORTC QLQ-C30 and (2) constructs related to anxiety, namely fatigue, dyspnea, and quality of life. The known-group validity was assessed according to the patients' breast cancer stage, religious beliefs, and emotional functioning levels. The internal consistency of the BAI domains was evaluated using Cronbach's alpha coefficient. Regression analysis was performed to compare the BAI total and domain scores between the two language versions. RESULTS: Data from 244 patients (144 English-speaking and 100 Chinese-speaking) were analyzed. For both language versions, the BAI total scores correlated moderately with the EORTC QLQ-C30 emotional functioning subdomain (r = -0.655 and -0.601). Correlations with fatigue, quality of life, and dyspnea were moderate (|r| = 0.456-0.606). Patients with poorer emotional functioning reported higher anxiety levels, establishing known-group validity. All BAI domains demonstrated satisfactory internal consistencies (α = 0.74-0.87), except for the panic domain (α = 0.57-0.61). Possible measurement equivalence between the language versions was established. CONCLUSION: Both English and Chinese versions of BAI are valid, reliable, and possibly equivalent for future use.
BACKGROUND: There is a lack of psychometric data for both the English and Chinese versions of Beck Anxiety Inventory (BAI) to support its usage among breast cancerpatients. This study examined the psychometric properties and measurement equivalence of the English and Chinese versions of BAI among breast cancerpatients in Singapore. METHODS:Patients were recruited from two major cancer centers in Singapore. The criterion and construct validity of BAI was assessed by its correlation strength with (1) the emotional functioning subdomain of EORTC QLQ-C30 and (2) constructs related to anxiety, namely fatigue, dyspnea, and quality of life. The known-group validity was assessed according to the patients' breast cancer stage, religious beliefs, and emotional functioning levels. The internal consistency of the BAI domains was evaluated using Cronbach's alpha coefficient. Regression analysis was performed to compare the BAI total and domain scores between the two language versions. RESULTS: Data from 244 patients (144 English-speaking and 100 Chinese-speaking) were analyzed. For both language versions, the BAI total scores correlated moderately with the EORTC QLQ-C30 emotional functioning subdomain (r = -0.655 and -0.601). Correlations with fatigue, quality of life, and dyspnea were moderate (|r| = 0.456-0.606). Patients with poorer emotional functioning reported higher anxiety levels, establishing known-group validity. All BAI domains demonstrated satisfactory internal consistencies (α = 0.74-0.87), except for the panic domain (α = 0.57-0.61). Possible measurement equivalence between the language versions was established. CONCLUSION: Both English and Chinese versions of BAI are valid, reliable, and possibly equivalent for future use.
Authors: Terence Ng; Ying Yun Lee; Jung-Woo Chae; Angie Hui Ling Yeo; Maung Shwe; Yan Xiang Gan; Raymond C H Ng; Pat Pak Yan Chu; Chiea Chuen Khor; Han Kiat Ho; Alexandre Chan Journal: BMC Cancer Date: 2017-12-19 Impact factor: 4.430
Authors: Yi Long Toh; Chia Jie Tan; Angie Hui Ling Yeo; Maung Shwe; Han Kiat Ho; Yan Xiang Gan; Koon Mian Foo; Pat Chu; Karin Olson; Alexandre Chan Journal: J Cell Mol Med Date: 2019-04-23 Impact factor: 5.310
Authors: Jantine Geertruida Röttgering; Linda Douw; Philip C de Witt Hamer; Mathilde C M Kouwenhoven; Tom Würdinger; Peter M van de Ven; Louise Sharpe; Hans Knoop; Martin Klein Journal: Trials Date: 2022-07-15 Impact factor: 2.728