Rodrigues M P, Rabelo-Silva E, Fuchs F D, Fuchs S C, Moreira L B
Postgraduate Studies Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Division of Cardiology, Hospital de Clínicas de Porto Alegre, Porto Alegre,Brazil.
Eur J Clin Nutr. 2017 Apr;71(4):552-554. doi: 10.1038/ejcn.2016.238. Epub 2016 Nov 30.
The study aimed to evaluate the reliability and the validity of the dietary sodium restriction questionnaire (DSRQ) in patients with hypertension receiving outpatient treatment at a tertiary care university hospital in Southern Brazil. This instrument is composed of three subscales: attitude, subjective norm and perceived behavioral control. A total of 104 patients were included. They were 63.3±8.9 years old and 75% were females. Cronbach's alpha coefficient for the subscales of attitude, subjective norm and perceived behavioral control were 0.75, 0.37 and 0.82, respectively. The PCA with the extraction of three factors explained a total of 53.5% of the variance. The data suggest that the 15-item DSRQ is reliable and has internal consistency of its construct to measure the barriers and the attitudes of hypertensive patients related to dietary sodium restriction and may be useful to improve blood pressure control.
该研究旨在评估饮食钠限制问卷（DSRQ）在巴西南部一所三级护理大学医院接受门诊治疗的高血压患者中的可靠性和有效性。该工具由三个分量表组成：态度、主观规范和感知行为控制。总共纳入了104名患者。他们的年龄为63.3±8.9岁，75%为女性。态度、主观规范和感知行为控制分量表的克朗巴哈α系数分别为0.75、0.37和0.82。提取三个因素的主成分分析共解释了53.5%的方差。数据表明，15项的DSRQ是可靠的，其结构具有内部一致性，可用于测量高血压患者与饮食钠限制相关的障碍和态度，可能有助于改善血压控制。
