Psychometric testing of the Determinants of Salt-Restriction Behaviour Questionnaire in people of Chinese ancestry: a methodological study

Table 4 Means, Standard Deviations, item-to-item correlation coefficients and overall Cronbach’s alpha for items in Part 2 if single items are deleted

Part 2	Mean		Standard Deviation		Item–to–total correlation coefficient		Cronbach’s alpha if item is deleted
Item	English version	Chinese version	English version	Chinese version	English version	Chinese version	English version	Chinese version
Item 1 What is the maximum daily salt consumption for an adult recommended by the WHO?	1.261	1.100	0.443	0.302	0.207	–0.060	0.636	0.616
Item 2 A long–term high dietary salt intake can directly lead to…	1.630	1.425	0.486	0.497	0.283	0.241	0.611	0.533
Item 3 What are the diagnostic criteria for high blood pressure?	1.308	1.425	0.465	0.497	0.268	0.267	0.615	0.518
Item 4 What are the causes of high blood pressure?	1.862	1.888	0.348	0.318	0.503	0.488	0.527	0.428
Item 5 How can you prevent high blood pressure?	1.908	1.900	0.292	0.302	0.502	0.445	0.542	0.450
Item 6 What are the complications of poor blood pressure control?	1.785	1.725	0.414	0.449	0.485	0.451	0.522	0.410

Note: The overall Cronbach coefficient alpha of the total scores was 0.638 for the English version and 0.584 for the Chinese version

ISSN: 1472-6955